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Reading a Ruler. Objective: KNOW HOW TO USE A RULER PROPERLY. UNDERSTAND how to find halves (1/2), quarters (1/4) and eighths 1/8 measurements TODAY’s AGENDA: COMPELTE THE PRETEST IN 5 MINUTES GO OVER PRETEST ANSWERS REVIEW HOW TO USE RULER. - PowerPoint PPT Presentation
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Reading a Ruler
Objective:1.KNOW HOW TO USE A RULER PROPERLY.2.UNDERSTAND how to find halves (1/2), quarters (1/4) and eighths 1/8 measurements
TODAY’s AGENDA:•COMPELTE THE PRETEST IN 5 MINUTES•GO OVER PRETEST ANSWERS•REVIEW HOW TO USE RULER
BOTH RULERS ARE CORRECT TOOLS FOR MEASURING! IT IS
YOUR REPSONSIBILITY YOUR REPSONSIBILITY TO ALWAYS START MEASURING AT THE ZERO!
Notice where the "0" line falls on the ruler. Some rulers have this line at the exact edge of the ruler and other rulers place this line slightly to the right of the edge.
The location of the "0" line is important for accurate measuring because you must place this point on the ruler at the exact edge of the item or space you're
measuring.
#1 reason kids get measuring WRONG…not noticing where the 0 is located!
Reading a RulerPretest
1 2 3 4 5
1 2 3 4 5
Reading a RulerPretest Answers
1 2 3 4 5
1 2 3 4 5
8328
12
1
18
518
134
334
1452
41
85
431
2128
118
724
138
538
348
74
Reading a Ruler
Fraction Review
A circle can be divided into many parts. For purposes of this review, the circle will be divided in to halves, quarters, and eights.
Reading a Rule
Fraction Review
Here the circle is divided into halves (two parts). If you add the two halves, what do you get for an answer?
1/2
1/2
Reading a Ruler
Fraction Review
Here the circle is divided into quarters (four parts). If you add the four quarters, what do you get for an answer?
1/4 1/4
1/4 1/4
Fraction Review
Here the circle is divided into eight parts. If you add the eight parts, what do you get for an answer?
1/8 1/8
1/8
1/8
1/81/8
1/8
1/8
Reading a Ruler
Reading a Ruler
Fraction Review
An inch can also be divided into many parts. For purposes of this review, the inch will be divided in to halves, quarters, and eights.
1”
1
Reading a Ruler
Fraction Review
Here the inch is divided into halves (two parts). If you add the two halves, what do you get for an answer?
1”
Halves
21
21
Reading a Ruler
Fraction Review
Here the inch is divided into four parts. If you add the four parts, what do you get for an answer?
1”
Quarters
41
41
41
41
Reading a Ruler
Fraction Review
Here the inch is divided into eight parts. If you add the eight parts, what do you get for an answer?
1”
Eights
81
81
81
81
81
81
81
81
Reading a Ruler
What do you think the missing measurement is?
1 2
1/2” 1” 1 1/2”
Reading a Ruler
What do you think the missing measurement is?
1 2
1/2” 1” 1 1/2” 2”
Reading a Ruler
What are the missing measurements?
1 2
1/2” 1”
1 1/4”3/4”1/4”
Reading a Ruler
What are the missing measurements?
1 2
1/2” 1”
1 1/4”3/4”1/4”
1”
Reading a Ruler
What are the missing measurements?
1 2
1/2” 1”
1 1/4”3/4”1/4”
1” 1 1/2”
Reading a Ruler
What are the missing measurements?
1 2
1/2” 1”
1 1/4”3/4”1/4”
1”
1 3/4”
1 1/2”
Reading a Ruler
What are the missing measurements?
1 2
1/2” 1”
1 1/4”3/4”1/4”
1”
1 3/4”
1 1/2” 2”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4”
1 7/8”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4” 2”
1 7/8”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4”
2 1/8”
2”
1 7/8”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4” 2 1/4”
2 1/8”
2”
1 7/8”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4”
2 3/8”
2 1/4”
2 1/8”
2”
1 7/8”
Reading a Ruler
What are the missing measurements?
1 2
1/8” 3/8” 5/8” 7/8” 1 1/8” 1 3/8”
1/4” 1/2” 3/4” 1” 1 1/4”
1 5/8”
2 1/2”1 1/2” 1 3/4”
2 5/8”2 3/8”
2 1/4”
2 1/8”
2”
1 7/8”
Reading a RulerPost Test
1 2 3 4 5
1 2 3 4 5
Name:Period:
Reading a RulerPost Test Answers
1 2 3 4 5
1 2 3 4 5
8328
12
1
18
518
134
334
1452
41
85
431
2128
118
724
138
538
348
74
Reading a Rule
An inch is often divided into sixteen parts. Count the spaces in the inch on the right side of the slide. How many are there?
1”
Eights
81
81
81
81
81
81
81
81
1”
Sixteenths
16
2
All the red fractions can be reduced. Do you see any patterns?
0 1
2
1
4
1 4
3
8
1
8
3
8
5
8
7
16
1
16
3
16
5
16
7
16
9
16
11
16
13
16
15
16
4
16
6
16
8
16
10
16
12
16
14
