Find a place to display a large monthly calendar for students to see and write on. As a daily routine, students will record their thinking on this calendar as they explore patterns in factors and multiples. See Unit 3 Lesson 5.

Display the class number line (0–130) where students can see and reach it with a pointer.

Attach a desk number line (0–100) to each student's desk to use throughout the year.

Display the Math Practices page where all students can see it.

Make a set of Digit Cards 0–9. See the Materials Preparation for Lesson 6.

Provide each student copies of the Small Multiplication Table. See Unit 8 Lesson 5.

Prepare a collection of coins for Lesson 4 Money Jar. Each student will need 60 pennies, 50 dimes, and 25 nickels.

Have the following tools readily available for the Daily Practice and Problems items in this unit:

• base-ten pieces
• monthly calendar
• individual clocks
• coins
• calculators
• fraction circle pieces
• square-inch tiles
• Digit Cards 0–9
• Triangle Flash Cards: Square Numbers (stored in an envelope)
• Multiplication Facts I Know chart (from Unit 8 or Master in Lesson 1)
• Addition Strategies Menu (Student Guide) Reference
• Subtraction Strategies Menu (Student Guide) Reference

LESSON	SESSIONS	DESCRIPTION	SUPPLIES
LESSON 1 Lemonade Stand	2	Students use multiplication, division, and graphing to solve problems involving a recipe for lemonade. These graphing activities develop multiplicative reasoning.	rulers
LESSON 2 Operations on a Number Line	1	Students revisit constant hoppers and number lines to solve problems that further their understanding of multiplication and the order of operations for addition, subtraction, and multiplication.	number lines
LESSON 3 Birthday Party	2	In the context of a birthday party, students work in groups or pairs on a set of problems that can be solved using division. Students are introduced to division number sentences.	counters number lines
LESSON 4 Money Jar	1	Students solve a series of problems in which they divide money equally among the members of a family. They write number sentences to show their solutions.	collection of coins: 60 pennies, 50 dimes, 25 nickels calculators
LESSON 5 Mr. Green's Giant Gumball Jamboree	1–2	Students use a variety of strategies to solve multiplication and division problems involving the cost of a gumball. They represent the costs on tables and graphs and then use these tools to solve problems. Students then use both multiplicative reasoning strategies and these tools to compare their solutions and check for reasonableness.	rulers chart paper
LESSON 6 Walking Around Shapes	3	Students discuss the difference between regular and irregular shapes. They measure regular shapes to the nearest centimeter and then look for the relationship between side length and perimeter. A variety of tools and strategies are used to solve perimeter problems including making point graphs, using mental math to multiply and divide, and using patterns in data tables, graphs, and number sentences.	centimeter ruler
LESSON 7 Katie's Job	2	In this lesson, students use patterns in graphs to solve problems involving multiplication and division, then use other solution strategies to check their work.	centimeter ruler