Unit 2
Concept 1: Multiplicative Comparisons
Example: 48 is 12 times as many as 4.
4 times as many as 12 is 48.
*Its easiest to models and to label the sentence. Is represents equals (=), the word times represents multiplication.
Multiplicative Comparsions Video
Concept 2: Multiples and Factors
Multiples can be thought of as skip counting.
Example: the multiples of 3 are 3, 6, 9,12, 15, 18, 21, 24, 27, 30, 33, 36...
Factors are numbers that are multiplied to get a product.
Example: The factors of 12 are 1, 2, 3, 4, 6, 12
Factor Pairs for 12 are 1 x 12, 2x 6, 3x4
Concept 3: Number Patterns
Find the rule in a pattern
Example: 11, 22, 33, 44, 55, 66, 77, 88
How does each number change?
Extend a pattern using a rule
Example: the rule is to add 3, complete the pattern.
3, 6, 9, 12,____, _____, ______
Finish a pattern with shapes while understanding the that the shapes alternate patterns.
Points of discussion: how does the pattern change?, can you describe how the pattern grows?
Concept 4: Multistep Word Problems
Understanding that problems can have multiple steps using addition, subtraction, multiplication and division to come to a conclusive answer.
Example: Conchita is making apple salads. Each salad needs 3 apples. Conchita has 5 red apples, and 9 green apples. Write and solve an equation to find out how many apples salads she can make. Does she use all her apples?