Unit 3- Multiple Towers and Cluster Problems

During this unit, students will build on the work they did in Unit 1. Students will be solving multiplication problems with 2-digit numbers, division word problems, and problems about multiples and number relationships. Students will work on multiplication and division again later this year in unit 7, when they will solve problems with larger numbers and share a variety of solution strategies.

Math Words and Ideas

1- Representing Multiplication with Arrays

2- Strategies for Solving Multiplication Problems

3- Unmarked Arrays

4- Division Situations

5- Division Strategies

6- Remainders: What Do You Do with the Extras?

7- Division and Multiplication

8- Factors and Multiples

9- Multiples Towers

10- Multiplying Groups of 10

11- Multiplication Cluster Problems

Investigations Games Unit 3

Non Investigations Games

Activities to Try at Home

Modeling Division Situations At school, students are solving word problems that represent various types of division situations. Encourage your child to help you solve situations that come up in your daily activities. Here are some examples: “I baked a batch of 48 cookies for the bake sale. I need to put them into bags of 5. How many bags of 5 can I make? What can I do with the extra cookies?” “There are 180 players who will play baseball in teams of 9. How many teams can they make?”

How Did You Solve That? Ask your child to tell you about how he or she is multiplying and dividing. Show that you are interested in these approaches. Because these strategies may be unfamiliar to you, listen carefully to your child’s explanation; you might even try to do a problem or two using the new procedure. Let your child be the teacher!