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© Joan A. Cotter, Ph.D., 2012
How Visualization Enhances Montessori Mathematics PART 1
Montessori FoundationConference
Friday, Nov 2, 2012Sarasota, Florida
by Joan A. Cotter, [email protected]
3 07
3 0
7
1000 10 1100
PowerPoint PresentationRightStartMath.com >Resources
7 37 37 3
© Joan A. Cotter, Ph.D., 20122
Counting Model
• Number Rods• Spindle Boxes• Decimal materials• Snake Game• Dot Game • Stamp Game• Multiplication Board• Bead Frame
In Montessori, counting is pervasive:
© Joan A. Cotter, Ph.D., 20123
Verbal Counting ModelFrom a child's perspective
© Joan A. Cotter, Ph.D., 20124
Verbal Counting ModelFrom a child's perspective
Because we’re so familiar with 1, 2, 3, we’ll use letters.
A = 1B = 2C = 3D = 4E = 5, and so forth
© Joan A. Cotter, Ph.D., 20125
Verbal Counting Model From a child's perspective
F + E
© Joan A. Cotter, Ph.D., 20126
Verbal Counting Model From a child's perspective
A
F + E
© Joan A. Cotter, Ph.D., 20127
Verbal Counting Model From a child's perspective
A B
F + E
© Joan A. Cotter, Ph.D., 20128
Verbal Counting Model From a child's perspective
A CB
F + E
© Joan A. Cotter, Ph.D., 20129
Verbal Counting Model From a child's perspective
A FC D EB
F + E
© Joan A. Cotter, Ph.D., 201210
Verbal Counting Model From a child's perspective
AA FC D EB
F + E
© Joan A. Cotter, Ph.D., 201211
Verbal Counting Model From a child's perspective
A BA FC D EB
F + E
© Joan A. Cotter, Ph.D., 201212
Verbal Counting Model From a child's perspective
A C D EBA FC D EB
F + E
© Joan A. Cotter, Ph.D., 201213
Verbal Counting Model From a child's perspective
A C D EBA FC D EB
F + E
What is the sum?(It must be a letter.)
© Joan A. Cotter, Ph.D., 201214
Verbal Counting Model From a child's perspective
K
G I J KHA FC D EB
F + E
© Joan A. Cotter, Ph.D., 201215
Verbal Counting Model From a child's perspective
Now memorize the facts!!
G + D
© Joan A. Cotter, Ph.D., 201216
Verbal Counting Model From a child's perspective
Now memorize the facts!!
G + D
H + F
© Joan A. Cotter, Ph.D., 201217
Verbal Counting Model From a child's perspective
Now memorize the facts!!
G + D
H + F
D + C
© Joan A. Cotter, Ph.D., 201218
Verbal Counting Model From a child's perspective
Now memorize the facts!!
G + D
H + F
C + G
D + C
© Joan A. Cotter, Ph.D., 201219
Verbal Counting Model From a child's perspective
E + I
Now memorize the facts!!
G + D
H + F
C + G
D + C
© Joan A. Cotter, Ph.D., 201220
Verbal Counting Model From a child's perspective
H – E
Subtract with your fingers by counting backward.
© Joan A. Cotter, Ph.D., 201221
Verbal Counting Model From a child's perspective
J – F
Subtract without using your fingers.
© Joan A. Cotter, Ph.D., 201222
Verbal Counting Model From a child's perspective
Try skip counting by B’s to T: B, D, . . . T.
© Joan A. Cotter, Ph.D., 201223
Verbal Counting Model From a child's perspective
Try skip counting by B’s to T: B, D, . . . T.
What is D E?
© Joan A. Cotter, Ph.D., 201224
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
© Joan A. Cotter, Ph.D., 201225
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
huh?
© Joan A. Cotter, Ph.D., 201226
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
(twelve)
© Joan A. Cotter, Ph.D., 201227
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
(12)(twelve)
© Joan A. Cotter, Ph.D., 201228
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
(12)(one 10)
(twelve)
© Joan A. Cotter, Ph.D., 201229
Verbal Counting Model From a child's perspective
Lis written ABbecause it is A J and B A’s
(12)(one 10)
(two 1s).
(twelve)
© Joan A. Cotter, Ph.D., 201230
Calendar Math
© Joan A. Cotter, Ph.D., 201231
Calendar Math
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
© Joan A. Cotter, Ph.D., 201232
Calendar Math
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
Calendar Counting
© Joan A. Cotter, Ph.D., 201233
Calendar Math
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
Calendar Counting
© Joan A. Cotter, Ph.D., 201234
Calendar Math
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
Calendar Counting
© Joan A. Cotter, Ph.D., 201235
Calendar Math
September123489101115161718222324252930
567121314192021262728
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
Calendar Counting
© Joan A. Cotter, Ph.D., 201236
Calendar Math
September123489101115161718222324252930
567121314192021262728
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
This is ordinal counting, not cardinal counting.
Calendar Counting
© Joan A. Cotter, Ph.D., 201237
Calendar Math
August
8
1
9
2
10
3 4 5 6 7
Partial Calendar
© Joan A. Cotter, Ph.D., 201238
Calendar Math
August
8
1
9
2
10
3 4 5 6 7
Partial Calendar
Children need the whole month to plan ahead.
© Joan A. Cotter, Ph.D., 201239
Calendar Math
September123489101115161718222324252930
567121314192021262728
August
29
22
15
8
1
30
23
16
9
2
24
17
10
3
25
18
11
4
26
19
12
5
27
20
13
6
28
21
14
7
31
Patterns are rarely based on 7s or proceed row by row.Patterns go on forever; they don’t stop at 31.
Calendar patterning
© Joan A. Cotter, Ph.D., 2012
Research on CountingKaren Wynn’s research
© Joan A. Cotter, Ph.D., 2012
Research on CountingKaren Wynn’s research
© Joan A. Cotter, Ph.D., 201242
Research on Counting
Karen Wynn’s research
© Joan A. Cotter, Ph.D., 201243
Research on Counting
Karen Wynn’s research
© Joan A. Cotter, Ph.D., 201244
Research on Counting
Karen Wynn’s research
© Joan A. Cotter, Ph.D., 201245
Research on CountingKaren Wynn’s research
© Joan A. Cotter, Ph.D., 201246
Research on Counting
Karen Wynn’s research
© Joan A. Cotter, Ph.D., 201247
Research on CountingKaren Wynn’s research
© Joan A. Cotter, Ph.D., 201248
Research on CountingOther research
© Joan A. Cotter, Ph.D., 201249
Research on Counting
• Australian Aboriginal children from two tribes.Brian Butterworth, University College London, 2008.
Other research
© Joan A. Cotter, Ph.D., 201250
Research on Counting
• Australian Aboriginal children from two tribes.Brian Butterworth, University College London, 2008.
• Adult Pirahã from Amazon region.Edward Gibson and Michael Frank, MIT, 2008.
Other research
© Joan A. Cotter, Ph.D., 201251
Research on Counting
• Australian Aboriginal children from two tribes.Brian Butterworth, University College London, 2008.
• Adult Pirahã from Amazon region.Edward Gibson and Michael Frank, MIT, 2008.
• Adults, ages 18-50, from Boston.Edward Gibson and Michael Frank, MIT, 2008.
Other research
© Joan A. Cotter, Ph.D., 201252
Research on Counting
• Australian Aboriginal children from two tribes.Brian Butterworth, University College London, 2008.
• Adult Pirahã from Amazon region.Edward Gibson and Michael Frank, MIT, 2008.
• Adults, ages 18-50, from Boston.Edward Gibson and Michael Frank, MIT, 2008.
• Baby chicks from Italy.Lucia Regolin, University of Padova, 2009.
Other research
© Joan A. Cotter, Ph.D., 201253
Research on CountingIn Japanese schools:
• Children are discouraged from using counting for adding.
© Joan A. Cotter, Ph.D., 201254
Research on CountingIn Japanese schools:
• Children are discouraged from using counting for adding.
• They consistently group in 5s.
© Joan A. Cotter, Ph.D., 2012
Subitizing Quantities(Identifying without counting)
© Joan A. Cotter, Ph.D., 2012
Subitizing Quantities(Identifying without counting)
• Five-month-old infants can subitize to 3.
© Joan A. Cotter, Ph.D., 2012
Subitizing Quantities(Identifying without counting)
• Three-year-olds can subitize to 5.
• Five-month-old infants can subitize to 3.
© Joan A. Cotter, Ph.D., 2012
Subitizing Quantities(Identifying without counting)
• Three-year-olds can subitize to 5.
• Four-year-olds can subitize 6 to 10 by using five as a subbase.
• Five-month-old infants can subitize to 3.
© Joan A. Cotter, Ph.D., 2012
Subitizing Quantities(Identifying without counting)
• Three-year-olds can subitize to 5.
• Four-year-olds can subitize 6 to 10 by using five as a subbase.
• Five-month-old infants can subitize to 3.
• Counting is like sounding out each letter; subitizing is recognizing the quantity.
© Joan A. Cotter, Ph.D., 201260
Research on CountingSubitizing
• Subitizing “allows the child to grasp the whole and the elements at the same time.”—Benoit
© Joan A. Cotter, Ph.D., 201261
Research on CountingSubitizing
• Subitizing “allows the child to grasp the whole and the elements at the same time.”—Benoit• Subitizing seems to be a necessary skill for understanding what the counting process means.—Glasersfeld
© Joan A. Cotter, Ph.D., 201262
Research on CountingSubitizing
• Children who can subitize perform better in mathematics long term.—Butterworth
• Subitizing “allows the child to grasp the whole and the elements at the same time.”—Benoit• Subitizing seems to be a necessary skill for understanding what the counting process means.—Glasersfeld
© Joan A. Cotter, Ph.D., 201263
Research on CountingSubitizing
• Counting-on is a difficult skill for many children. —Journal for Res. in Math Ed. Nov. 2011
• Children who can subitize perform better in mathematics long term.—Butterworth
• Subitizing “allows the child to grasp the whole and the elements at the same time.”—Benoit• Subitizing seems to be a necessary skill for understanding what the counting process means.—Glasersfeld
© Joan A. Cotter, Ph.D., 201264
Research on CountingSubitizing
• Counting-on is a difficult skill for many children. —Journal for Res. in Math Ed. Nov. 2011
• Children who can subitize perform better in mathematics long term.—Butterworth
• Subitizing “allows the child to grasp the whole and the elements at the same time.”—Benoit• Subitizing seems to be a necessary skill for understanding what the counting process means.—Glasersfeld
• Math anxiety affects counting ability, but not subitizing ability.
© Joan A. Cotter, Ph.D., 201265
Visualizing Quantities
© Joan A. Cotter, Ph.D., 201266
Visualizing Quantities
“Think in pictures, because the brain remembers images better than it does anything else.”
Ben Pridmore, World Memory Champion, 2009
© Joan A. Cotter, Ph.D., 201267
Visualizing Quantities
“The role of physical manipulatives was to help the child form those visual images and thus to eliminate the need for the physical manipulatives.”
Ginsberg and others
© Joan A. Cotter, Ph.D., 2012
• Representative of structure of numbers.• Easily manipulated by children.• Imaginable mentally.
Visualizing QuantitiesJapanese criteria for manipulatives
Japanese Council ofMathematics Education
© Joan A. Cotter, Ph.D., 2012
Visualizing Quantities
• Reading• Sports• Creativity• Geography• Engineering• Construction
Visualizing also needed in:
© Joan A. Cotter, Ph.D., 2012
Visualizing Quantities
• Reading• Sports• Creativity• Geography• Engineering• Construction
• Architecture• Astronomy• Archeology• Chemistry• Physics• Surgery
Visualizing also needed in:
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesReady: How many?
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesReady: How many?
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesTry again: How many?
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesTry again: How many?
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesTry to visualize 8 identical apples without grouping.
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesTry to visualize 8 identical apples without grouping.
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesNow try to visualize 5 as red and 3 as green.
© Joan A. Cotter, Ph.D., 2012
Visualizing QuantitiesNow try to visualize 5 as red and 3 as green.
© Joan A. Cotter, Ph.D., 2012
Visualizing Quantities
I II III IIII V VIII
1 23458
Early Roman numerals
© Joan A. Cotter, Ph.D., 201280
Visualizing Quantities
Who could read the music?
:
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
• Grouping in fives extends subitizing.
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesUsing fingers
Grouping in Fives is a three-period lesson.
© Joan A. Cotter, Ph.D., 201284
Grouping in FivesUsing fingers
Grouping in Fives is a three-period lesson.
© Joan A. Cotter, Ph.D., 201285
Grouping in FivesUsing fingers
Grouping in Fives is a three-period lesson.
© Joan A. Cotter, Ph.D., 201286
Grouping in FivesUsing fingers
Grouping in Fives is a three-period lesson.
© Joan A. Cotter, Ph.D., 201287
Grouping in FivesUsing fingers
Grouping in Fives is a three-period lesson.
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesYellow is the sun.Six is five and one.
Why is the sky so blue?Seven is five and two.
Salty is the sea.Eight is five and three.
Hear the thunder roar.Nine is five and four.
Ducks will swim and dive.Ten is five and five.
–Joan A. Cotter
Yellow is the Sun
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesRecognizing 5
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesRecognizing 5
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
5 has a middle; 4 does not.
Recognizing 5
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201293
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201294
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201295
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201296
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201297
Grouping in FivesTally sticks
© Joan A. Cotter, Ph.D., 201298
Grouping in Fives
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.QuickTime™ and a
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (LZW) decompressorare needed to see this picture.QuickTime™ and aTIFF (LZW) decompressorare needed to see this picture.QuickTime™ and aTIFF (LZW) decompressorare needed to see this picture.QuickTime™ and aTIFF (LZW) decompressorare needed to see this picture.
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Pairing Finger Cards
© Joan A. Cotter, Ph.D., 201299
Grouping in Fives
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QuickTime™ and aTIFF (LZW) decompressor
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QuickTime™ and aTIFF (LZW) decompressor
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Ordering Finger Cards
© Joan A. Cotter, Ph.D., 2012100
Grouping in Fives
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10
5 1
Matching Number Cards to Finger Cards
© Joan A. Cotter, Ph.D., 2012101
Grouping in Fives
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9 4Matching Finger Cards to Number Cards
1 610
2 83 57
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© Joan A. Cotter, Ph.D., 2012102
Grouping in Fives
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Finger Card Memory game
© Joan A. Cotter, Ph.D., 2012103
Grouping in FivesNumber Rods
© Joan A. Cotter, Ph.D., 2012104
Grouping in FivesNumber Rods
© Joan A. Cotter, Ph.D., 2012105
Grouping in FivesNumber Rods
© Joan A. Cotter, Ph.D., 2012106
Grouping in FivesSpindle Box
© Joan A. Cotter, Ph.D., 2012107
Grouping in FivesSpindle Box
© Joan A. Cotter, Ph.D., 2012108
Grouping in FivesSpindle Box
1 2 30 4
© Joan A. Cotter, Ph.D., 2012109
Grouping in FivesSpindle Box
6 7 85 9
© Joan A. Cotter, Ph.D., 2012110
Grouping in FivesSpindle Box
6 7 85 9
© Joan A. Cotter, Ph.D., 2012111
Grouping in FivesSpindle Box
6 7 85 9
© Joan A. Cotter, Ph.D., 2012112
Grouping in FivesSpindle Box
6 7 85 9
© Joan A. Cotter, Ph.D., 2012113
Grouping in FivesSpindle Box
6 7 85 9
© Joan A. Cotter, Ph.D., 2012114
6 7 85 9
Grouping in FivesSpindle Box
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
1000 100 10 1
1000 100 10 1
100 10 1
100 10 1
100 10 1
100 1
1000 100 10 1
1000 100 10 1
Stamp Game
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
1000 100 10 1
1000 100 10 1
100 10 1
100 10 1
100 10 1
100 1
1000 100 10 1
1000 100 10 1
Stamp Game
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
100 10 1100 10 1
100 10 1100 10 1
10 1 1
1000 100 10 11000 100 10 1
1000 100 10 11000 100 10 1
10
10
100 100
100 100
100 100
100 100Stamp Game
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
100 10 1100 10 1
100 10 1100 10 1
10 1 1
1000 100 10 11000 100 1
1000 100 10 11000 100 10 1
10
10
100 100
100 100
100 100
100 100
10
Stamp Game
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
100 10 1100 10 1
100 10 1100 10 1
10 1 1
1000 100 10 11000 100 1
1000 100 10 11000 100 10 1
10
10
100 100
100 100
100 100
100 100
10
Stamp Game
© Joan A. Cotter, Ph.D., 2012120
Grouping in Fives
“Grouped in fives so the child does not need to count.”
Black and White Bead Stairs
A. M. Joosten
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesEntering quantities
© Joan A. Cotter, Ph.D., 2012
3
Grouping in FivesEntering quantities
© Joan A. Cotter, Ph.D., 2012123
5
Grouping in FivesEntering quantities
© Joan A. Cotter, Ph.D., 2012124
7
Grouping in FivesEntering quantities
© Joan A. Cotter, Ph.D., 2012125
Grouping in Fives
10
Entering quantities
© Joan A. Cotter, Ph.D., 2012126
Grouping in FivesThe stairs
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesAdding
© Joan A. Cotter, Ph.D., 2012
Grouping in FivesAdding
4 + 3 =
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
4 + 3 = Adding
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
4 + 3 = Adding
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
4 + 3 = Adding
© Joan A. Cotter, Ph.D., 2012
Grouping in Fives
4 + 3 = 7 Adding
© Joan A. Cotter, Ph.D., 2012133
Math Card Games
© Joan A. Cotter, Ph.D., 2012134
Math Card Games
• Provide repetition for learning the facts.
© Joan A. Cotter, Ph.D., 2012135
Math Card Games
• Provide repetition for learning the facts.
• Encourage autonomy.
© Joan A. Cotter, Ph.D., 2012136
Math Card Games
• Provide repetition for learning the facts.
• Encourage autonomy.
• Promote social interaction.
© Joan A. Cotter, Ph.D., 2012137
Math Card Games
• Provide repetition for learning the facts.
• Encourage autonomy.
• Promote social interaction.
• Are enjoyed by the children.
© Joan A. Cotter, Ph.D., 2012138
Go to the Dump GameObjective: To learn the facts that total 10:
1 + 92 + 83 + 74 + 65 + 5
© Joan A. Cotter, Ph.D., 2012139
Go to the Dump GameObjective: To learn the facts that total 10:
1 + 92 + 83 + 74 + 65 + 5
Object of the game: To collect the most pairs that equal ten.
© Joan A. Cotter, Ph.D., 2012140
“Math” Way of Naming Numbers
© Joan A. Cotter, Ph.D., 2012141
“Math” Way of Naming Numbers
11 = ten 1
© Joan A. Cotter, Ph.D., 2012142
“Math” Way of Naming Numbers
11 = ten 112 = ten 2
© Joan A. Cotter, Ph.D., 2012143
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 3
© Joan A. Cotter, Ph.D., 2012144
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4
© Joan A. Cotter, Ph.D., 2012145
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
© Joan A. Cotter, Ph.D., 2012146
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
20 = 2-ten
© Joan A. Cotter, Ph.D., 2012147
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
20 = 2-ten 21 = 2-ten 1
© Joan A. Cotter, Ph.D., 2012148
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
20 = 2-ten 21 = 2-ten 122 = 2-ten 2
© Joan A. Cotter, Ph.D., 2012149
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
20 = 2-ten 21 = 2-ten 122 = 2-ten 223 = 2-ten 3
© Joan A. Cotter, Ph.D., 2012150
“Math” Way of Naming Numbers
11 = ten 112 = ten 213 = ten 314 = ten 4 . . . .19 = ten 9
20 = 2-ten 21 = 2-ten 122 = 2-ten 223 = 2-ten 3 . . . . . . . .99 = 9-ten 9
© Joan A. Cotter, Ph.D., 2012151
“Math” Way of Naming Numbers
137 = 1 hundred 3-ten 7
© Joan A. Cotter, Ph.D., 2012152
“Math” Way of Naming Numbers
137 = 1 hundred 3-ten 7or
137 = 1 hundred and 3-ten 7
© Joan A. Cotter, Ph.D., 2012153
“Math” Way of Naming Numbers
0
10
20
30
40
50
60
70
80
90
100
4 5 6Ages (yrs.)Song, M., & Ginsburg, H. (1988). p. 326. The effect of the Korean
number system on young children's counting: A natural experiment in numerical bilingualism. International Journal of Psychology, 23, 319-332.
Korean formal [math way]Korean informal [not explicit]
ChineseU.S.
Average Highest Number
Counted
© Joan A. Cotter, Ph.D., 2012154
“Math” Way of Naming Numbers
0
10
20
30
40
50
60
70
80
90
100
4 5 6Ages (yrs.)Song, M., & Ginsburg, H. (1988). p. 326. The effect of the Korean
number system on young children's counting: A natural experiment in numerical bilingualism. International Journal of Psychology, 23, 319-332.
Korean formal [math way]Korean informal [not explicit]
ChineseU.S.
Average Highest Number
Counted
© Joan A. Cotter, Ph.D., 2012155
“Math” Way of Naming Numbers
0
10
20
30
40
50
60
70
80
90
100
4 5 6Ages (yrs.)Song, M., & Ginsburg, H. (1988). p. 326. The effect of the Korean
number system on young children's counting: A natural experiment in numerical bilingualism. International Journal of Psychology, 23, 319-332.
Korean formal [math way]Korean informal [not explicit]
ChineseU.S.
Average Highest Number
Counted
© Joan A. Cotter, Ph.D., 2012156
“Math” Way of Naming Numbers
0
10
20
30
40
50
60
70
80
90
100
4 5 6Ages (yrs.)Song, M., & Ginsburg, H. (1988). p. 326. The effect of the Korean
number system on young children's counting: A natural experiment in numerical bilingualism. International Journal of Psychology, 23, 319-332.
Korean formal [math way]Korean informal [not explicit]
ChineseU.S.
Average Highest Number
Counted
© Joan A. Cotter, Ph.D., 2012157
“Math” Way of Naming Numbers
0
10
20
30
40
50
60
70
80
90
100
4 5 6Ages (yrs.)Song, M., & Ginsburg, H. (1988). p. 326. The effect of the Korean
number system on young children's counting: A natural experiment in numerical bilingualism. International Journal of Psychology, 23, 319-332.
Korean formal [math way]Korean informal [not explicit]
ChineseU.S.
Average Highest Number
Counted
© Joan A. Cotter, Ph.D., 2012158
Math Way of Naming Numbers• Only 11 words are needed to count to 100 the math way, 28 in English. (All Indo-European languages are non-standard in number naming.)
© Joan A. Cotter, Ph.D., 2012159
Math Way of Naming Numbers• Only 11 words are needed to count to 100 the math way, 28 in English. (All Indo-European languages are non-standard in number naming.)
• Asian children learn mathematics using the math way of counting.
© Joan A. Cotter, Ph.D., 2012160
Math Way of Naming Numbers• Only 11 words are needed to count to 100 the math way, 28 in English. (All Indo-European languages are non-standard in number naming.)
• Asian children learn mathematics using the math way of counting.
• They understand place value in first grade; only half of U.S. children understand place value at the end of fourth grade.
© Joan A. Cotter, Ph.D., 2012161
Math Way of Naming Numbers• Only 11 words are needed to count to 100 the math way, 28 in English. (All Indo-European languages are non-standard in number naming.)
• Asian children learn mathematics using the math way of counting.
• They understand place value in first grade; only half of U.S. children understand place value at the end of fourth grade.
• Mathematics is the science of patterns. The patterned math way of counting greatly helps children learn number sense.
© Joan A. Cotter, Ph.D., 2012162
Math Way of Naming NumbersCompared to reading:
© Joan A. Cotter, Ph.D., 2012163
Math Way of Naming Numbers
• Just as reciting the alphabet doesn’t teach reading, counting doesn’t teach arithmetic.
Compared to reading:
© Joan A. Cotter, Ph.D., 2012164
Math Way of Naming Numbers
• Just as reciting the alphabet doesn’t teach reading, counting doesn’t teach arithmetic.
• Just as we first teach the sound of the letters, we must first teach the name of the quantity (math way).
Compared to reading:
© Joan A. Cotter, Ph.D., 2012165
Math Way of Naming Numbers
• Just as reciting the alphabet doesn’t teach reading, counting doesn’t teach arithmetic.
• Just as we first teach the sound of the letters, we must first teach the name of the quantity (math way).
• Montessorians need to use the math way of naming numbers for a longer period of time.
Compared to reading:
© Joan A. Cotter, Ph.D., 2012166
Math Way of Naming Numbers
“Rather, the increased gap between Chinese and U.S. students and that of Chinese Americans and Caucasian Americans may be due primarily to the nature of their initial gap prior to formal schooling, such as counting efficiency and base-ten number sense.”
Jian Wang and Emily Lin, 2005Researchers
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
4-ten = forty
The “ty” means tens.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
4-ten = forty
The “ty” means tens.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
6-ten = sixty
The “ty” means tens.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
3-ten = thirty
“Thir” also used in 1/3, 13 and 30.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
5-ten = fifty
“Fif” also used in 1/5, 15 and 50.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
2-ten = twenty
Two used to be pronounced “twoo.”
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
A word gamefireplace place-fire
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
A word gamefireplace place-fire
paper-newsnewspaper
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
A word gamefireplace place-fire
paper-news
box-mail mailbox
newspaper
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
ten 4
“Teen” also means ten.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
ten 4 teen 4
“Teen” also means ten.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
ten 4 teen 4 fourteen
“Teen” also means ten.
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
a one left
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
a one left a left-one
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
a one left a left-one eleven
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
two left
Two said as “twoo.”
© Joan A. Cotter, Ph.D., 2012
Math Way of Naming NumbersTraditional names
two left twelve
Two said as “twoo.”
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten
3 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten
3 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten
3 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten 7
3 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten 7
3 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten 7
3 07
© Joan A. Cotter, Ph.D., 2012
3 0
Composing Numbers
3-ten 7
7
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
3-ten 7
Note the congruence in how we say the number, represent the number, and write the number.
3 07
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1-ten
1 0
Another example.
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1-ten 8
1 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1-ten 8
1 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1-ten 8
1 08
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1-ten 8
1 88
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
10-ten
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
10-ten
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
10-ten
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
10-ten
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1 hundred
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1 hundred
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1 hundred
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1 hundred
1 01 01 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
1 hundred
1 0 0
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
2 hundred
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
2 hundred
© Joan A. Cotter, Ph.D., 2012
Composing Numbers
2 hundred
2 0 0
© Joan A. Cotter, Ph.D., 2012
Evens and Odds
© Joan A. Cotter, Ph.D., 2012
Evens and OddsEvens
© Joan A. Cotter, Ph.D., 2012
Evens and OddsEvens
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsEvens
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsEvens
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsEvens
Use two fingers and touch each pair in succession.
EVEN!
© Joan A. Cotter, Ph.D., 2012
Evens and OddsOdds
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsOdds
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsOdds
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsOdds
Use two fingers and touch each pair in succession.
© Joan A. Cotter, Ph.D., 2012
Evens and OddsOdds
Use two fingers and touch each pair in succession.
ODD!
© Joan A. Cotter, Ph.D., 2012222
Learning the Facts
© Joan A. Cotter, Ph.D., 2012223
Learning the Facts
• Based on counting.
Limited success when:
Whether dots, fingers, number lines, or counting words.
© Joan A. Cotter, Ph.D., 2012224
Learning the Facts
• Based on counting.
Limited success when:
• Based on rote memory.
Whether dots, fingers, number lines, or counting words.
Whether by flash cards or timed tests.
© Joan A. Cotter, Ph.D., 2012225
Learning the Facts
• Based on counting.
• Based on skip counting for multiplication facts.
Limited success when:
• Based on rote memory.
Whether dots, fingers, number lines, or counting words.
Whether by flash cards or timed tests.
© Joan A. Cotter, Ph.D., 2012226
Fact Strategies
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
Take 1 from the 5 and give it to the 9.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
Take 1 from the 5 and give it to the 9.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 =
Take 1 from the 5 and give it to the 9.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesComplete the Ten
9 + 5 = 14
Take 1 from the 5 and give it to the 9.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesTwo Fives
8 + 6 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesTwo Fives
8 + 6 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesTwo Fives
8 + 6 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesTwo Fives
8 + 6 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesTwo Fives
8 + 6 =10 + 4 = 14
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 =
Subtract 5;then 4.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 =
Subtract 5;then 4.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 =
Subtract 5;then 4.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Down
15 – 9 = 6
Subtract 5;then 4.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesSubtract from 10
15 – 9 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesSubtract from 10
15 – 9 =
Subtract 9 from 10.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesSubtract from 10
15 – 9 =
Subtract 9 from 10.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesSubtract from 10
15 – 9 =
Subtract 9 from 10.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesSubtract from 10
15 – 9 = 6
Subtract 9 from 10.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =
Start with 9; go up to 15.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =
Start with 9; go up to 15.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =
Start with 9; go up to 15.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =
Start with 9; go up to 15.
© Joan A. Cotter, Ph.D., 2012
Fact StrategiesGoing Up
15 – 9 =1 + 5 = 6
Start with 9; go up to 15.
© Joan A. Cotter, Ph.D., 2012256
Rows and Columns GameObjective: To find a total of 15 by adding 2, 3, or 4 cards in a row or in a column.
© Joan A. Cotter, Ph.D., 2012257
Rows and Columns GameObjective: To find a total of 15 by adding 2, 3, or 4 cards in a row or in a column.
Object of the game: To collect the most cards.
© Joan A. Cotter, Ph.D., 2012258
Rows and Columns Game8 7 1 9
6 4 3 3
2 2 5 6
6 3 8 8
© Joan A. Cotter, Ph.D., 2012259
Rows and Columns Game
6 3 8 8
8 7 1 9
6 4 3 3
2 2 5 6
© Joan A. Cotter, Ph.D., 2012260
Rows and Columns Game8 7 1 9
6 4 3 3
2 2 5 6
6 3 8 8
© Joan A. Cotter, Ph.D., 2012261
Rows and Columns Game1 9
6 4 3 3
6 3 8 8
© Joan A. Cotter, Ph.D., 2012262
Rows and Columns Game1 9
6 4 3 3
6 3 8 8
7 6
2 1 5 1
© Joan A. Cotter, Ph.D., 2012263
Rows and Columns Game1 9
6 4 3 3
6 3 8 8
7 6
2 1 5 1
© Joan A. Cotter, Ph.D., 2012264
Rows and Columns Game1 9
6 4 3 3
6 3 8 8
7 6
2 1 5 1
© Joan A. Cotter, Ph.D., 2012265
Rows and Columns Game1
6 4 3 3
3 8 8
1 5 1
© Joan A. Cotter, Ph.D., 2012266
Rows and Columns Game
© Joan A. Cotter, Ph.D., 2012
MoneyPenny
© Joan A. Cotter, Ph.D., 2012
MoneyNickel
© Joan A. Cotter, Ph.D., 2012
MoneyDime
© Joan A. Cotter, Ph.D., 2012
MoneyQuarter
© Joan A. Cotter, Ph.D., 2012
MoneyQuarter
© Joan A. Cotter, Ph.D., 2012
MoneyQuarter
© Joan A. Cotter, Ph.D., 2012
MoneyQuarter
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.• As you progress to the left, value at each position is ten times greater than previous position.
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.• As you progress to the left, value at each position is ten times greater than previous position.
(Shown by the Decimal Cards.)
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.• As you progress to the left, value at each position is ten times greater than previous position.
(Shown by the Decimal Cards.)
Dynamic
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.• As you progress to the left, value at each position is ten times greater than previous position.
(Shown by the Decimal Cards.)
Dynamic • 10 ones = 1 ten; 10 tens = 1 hundred; 10 hundreds = 1 thousand, ….
© Joan A. Cotter, Ph.D., 2012
Place ValueTwo aspects
Static • Value of a digit is determined by position.• No position may have more than nine.• As you progress to the left, value at each position is ten times greater than previous position.
(Shown by the Decimal Cards.)
Dynamic • 10 ones = 1 ten; 10 tens = 1 hundred; 10 hundreds = 1 thousand, ….
(Represented on the Abacus and other materials.)
© Joan A. Cotter, Ph.D., 2012
Exchanging
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
ExchangingThousands
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
ExchangingHundreds
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
ExchangingTens
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
ExchangingOnes
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 6
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 6
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 6
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 6
© Joan A. Cotter, Ph.D., 2012
ExchangingAdding
8+ 614
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
ExchangingAdding
8+ 614
Too many ones; trade 10 ones for 1 ten.
1000 10 1100
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 614
Too many ones; trade 10 ones for 1 ten.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 614
Too many ones; trade 10 ones for 1 ten.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding
8+ 614
Same answer before and after exchanging.
© Joan A. Cotter, Ph.D., 2012297
Bead Frame
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012298
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012299
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012300
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012301
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012302
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012303
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012304
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012305
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012306
Bead Frame
8+ 6
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012307
8+ 614
1
10
100
1000
Bead Frame
© Joan A. Cotter, Ph.D., 2012308
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012309
• Not visualizable: Beads need to be grouped in fives.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012310
• Not visualizable: Beads need to be grouped in fives.
• When beads are moved right, inconsistent with equation order: Beads need to be moved left.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012311
• Not visualizable: Beads need to be grouped in fives.
• When beads are moved right, inconsistent with equation order: Beads need to be moved left.
• Hierarchies of numbers represented sideways: They need to be in vertical columns.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012312
• Not visualizable: Beads need to be grouped in fives.
• When beads are moved right, inconsistent with equation order: Beads need to be moved left.
• Hierarchies of numbers represented sideways: They need to be in vertical columns.
• Exchanging done before second number is completely added: Addends need to be combined before exchanging.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012313
• Not visualizable: Beads need to be grouped in fives.
• When beads are moved right, inconsistent with equation order: Beads need to be moved left.
• Hierarchies of numbers represented sideways: They need to be in vertical columns.
• Exchanging done before second number is completely added: Addends need to be combined before exchanging.
• Answer is read going up: We read top to bottom.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012314
• Not visualizable: Beads need to be grouped in fives.
• When beads are moved right, inconsistent with equation order: Beads need to be moved left.
• Hierarchies of numbers represented sideways: They need to be in vertical columns.
• Exchanging before second number is completely added: Addends need to be combined before exchanging.
• Answer is read going up: We read top to bottom.
• Distracting: Room is visible through the frame.
Bead FrameDifficulties for the child
1
10
100
1000
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Enter the first number from left to right.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Add starting at the right. Write results after each step.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Add starting at the right. Write results after each step.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Add starting at the right. Write results after each step.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
Add starting at the right. Write results after each step.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6
Add starting at the right. Write results after each step.
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
96
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
96
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
96
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
96
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
96
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
396
Add starting at the right. Write results after each step.
1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
396
Add starting at the right. Write results after each step.
1 1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
396
Add starting at the right. Write results after each step.
1 1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
396
Add starting at the right. Write results after each step.
1 1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6396
Add starting at the right. Write results after each step.
1 1
© Joan A. Cotter, Ph.D., 2012
1000 10 1100
ExchangingAdding 4-digit numbers
3658+ 2738
6396
Add starting at the right. Write results after each step.
1 1
© Joan A. Cotter, Ph.D., 2012341
Common Core State Standards
These Standards do not dictate curriculum or teaching methods. For example, just because topic A appears before topic B in the standards for a given grade, it does not necessarily mean that topic A must be taught before topic B.
Page 5
© Joan A. Cotter, Ph.D., 2012342
Common Core State StandardsPage 5
A teacher might prefer to teach topic B before topic A, or might choose to highlight connections by teaching topic A and topic B at the same time.
© Joan A. Cotter, Ph.D., 2012343
Common Core State StandardsPage 5
Or, a teacher might prefer to teach a topic of his or her own choosing that leads, as a byproduct, to students reaching the standards for topics A and B.
© Joan A. Cotter, Ph.D., 2012
How Visualization Enhances Montessori Mathematics PART 1
Montessori FoundationConference
Friday, Nov 2, 2012Sarasota, Florida
by Joan A. Cotter, [email protected]
3 07
3 0
7
1000 10 1100
PowerPoint PresentationRightStartMath.com >Resources
7 37 37 3
© Joan A. Cotter, Ph.D., 2012345
Memorizing Math
© Joan A. Cotter, Ph.D., 2012346
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012347
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012348
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012349
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012350
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012351
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012352
Memorizing Math
Percentage RecallImmediately After 1 day After 4 wks
Rote 32 23 8 Concept 69 69 58
Some research
© Joan A. Cotter, Ph.D., 2012
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
• Liked by those who don’t need them.
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
• Liked by those who don’t need them.
• Don’t work for those with learning disabilities.
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
• Liked by those who don’t need them.
• Don’t work for those with learning disabilities.
• Give the false impression that math isn’t about thinking.
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
• Liked by those who don’t need them.
• Don’t work for those with learning disabilities.
• Give the false impression that math isn’t about thinking.
• Often produce stress – children under stress stop learning.
Memorizing Math 9 + 7Flash cards
© Joan A. Cotter, Ph.D., 2012
• Are often used to teach rote.
• Liked by those who don’t need them.• Don’t work for those with learning disabilities.
• Give the false impression that math isn’t about thinking.
• Often produce stress – children under stress stop learning.
• Are not concrete – they use abstract symbols.
Memorizing MathFlash cards
9 + 7