# Lesson 4: Repeated Addition and Number Lines

## Day 2

### Activity 3: Number Lines and Multiplication

Give your child the "Number Lines and Multiplication" sheets. She should read the information provided to answer the questions. Note that answers will vary for #5.

"Number Lines and Multiplication" Answer Key

Student Activity Page

Student Activity Page

### Activity 4: Using All of the Strategies!

Materials: fine point dry-erase markers (kit), laminated multiplication strategies mat (kit), set of double-nine dominoes (kit)

Write 4×3 in the space provided on the laminated multiplication strategies mat. Give your child a dry-erase marker, and tell her to fill in each space on the mat to model the given multiplication sentence. She should show the following:

- 4 by 3 or 3 by 4 array
- 4 groups with 3 in each one
- 3+3+3+3
- a number line showing 4 jumps with 3 spaces each
- a product of 12 in the multiplication sentence at the top

Now, give your child a set of double-nine dominoes with all of the dominoes showing a blank (zero) removed as well as dominoes showing 7, 8, or 9 on either side. Tell her to place the dominoes face down and shuffle them. She will draw one domino at a time and use the numbers showing to create a multiplication sentence to be solved. She will then write it on the laminated multiplication strategies mat. For example, if she draws a domino showing 2 and 5, she can either write 2×5 or 5×2 in the space on the mat. She will model the sentence in each of the ways shown on the mat: drawing an array, showing equal groups, writing a repeated addition sentence, and using the number line.

Check her work as she goes, and ask her to repeat this process five more times.

Check her work as she goes, and ask her to repeat this process five more times.