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CATHY JONES Secondary Math Instruction Specialist Center for Mathematics and Science Education Arkansas NASA Education Resource Center WAAX 202 #1 University of Arkansas Fayetteville, Arkansas 72701 (479) 575-3875 (479) 575-5680 (FAX) e-mail: cej001@uark.edu - PowerPoint PPT Presentation
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Presented by:CATHY JONESSecondary Math Instruction SpecialistCenter for Mathematics and Science EducationArkansas NASA Education Resource CenterWAAX 202 #1 University of ArkansasFayetteville, Arkansas 72701(479) 575-3875(479) 575-5680 (FAX)e-mail: cej001@uark.eduhttp://www.uark.edu/~k12 info/Wiki: cmasemath.pbworks.com
Arkansas Standards: NO.2.4.1 & NO.2.5.2
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
Associative Property of Addition
(4 + 2) = 6 6 + 5 = 11
(2 + 5) = 7
4 + 7 = 11 Associative Property of Addition
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
(5 + 2) = 7
(5 + 2) + 4 = A 5 + (2 + 4) = B
(2 + 4) = 6
5 + 6 = 11 B = 11
v
1st
2nd
3rd 7 + 4 = 11 A = 11
When we roll the dice write down one equation, using grouping symbols. Model the equation using cubes. Then color the model on the grid paper. Be sure to do what is in the parenthesis first. You will need to use 4 different colors of cubes and four different colors on the grid paper. Be prepared to share your work with the class.
Associative Property of Addition
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
Associative Property of Multiplication
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
(5 X 6 ) = 30 30 X 2 = 60
5 X 12 = 60
(6 X 2) = 12
Associative Property of Multiplication
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
(5 x 2) = 10
(5 x 2) x 4 = A 5 x (2 x 4) = B
v
10 x 4 = 40 A = 40When we roll the dice write down one equation, using grouping symbols. Model the equation using cubes. Then color the model on the grid paper. Be sure to do what is in the parenthesis first. Be prepared to share your work with the class.
5 2
10
4Model this equation using your cubes, grid paper and colors.
Associative Property of Multiplication
1st
2nd
3rd
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
Associative Property of
SUBTRACTION?(6 - 4) = 2 2 - 1 = 1
6 – 3 = 3
(4 - 1) = 3
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
ANSWERS DID NOT
STAY THE SAME!
Associative Property of DIVISION?
( 6 3) = 2
3 3 = 1
GROUPING can change, the ORDER cannot change, & THE ANSWER STAYS THE SAME!
( 18 6) = 3
18 2 = 9
ANSWERS DID NOT
STAY THE SAME!
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