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# Grades 2-3: Multiplication Flipbooks

Subjects:

Common Core, Math

Grades:

2, 3

In this lesson, students will make a flipbook of multiplication strategies that they can use throughout the year as they strengthen multiplication fluency and problem solving skills.

## Goal

Students will interpret products as the number of objects in groups of objects (i.e. 5 objects in 7 groups of five objects each).

## Standard

CCSS.Math.Content.3.OA.A.1 Interpret products of whole numbers.

## Objectives

Students will define product as the result of multiplication.

Students will interpret and explain products as the number of objects in groups of objects.

## Materials

- A Hotchalk.com Problem Solving Sheet for each student
- Prepare flipbooks for each student by putting together five pieces of paper and folding them over so that it creates a small book. Staple the center to hold the flip books together.
- Provide students with colored pencils and other drawing materials.

## Product! Multiplication Warm Up (10 minutes)

Tell students that, in math, we use words to describe specific things. In addition, when we add two numbers, the answer is the sum. In multiplication, when we multiply two numbers, we call the result the product.

Remind students that they have already started learning multiplication. One way to practice multiplication is by skip counting. Tell students that you are going to call a game called “Product.” Go through key fact families (i.e. 3, 4, 6, 7, 8, 9, 11, 12). The first student starts counting. The next player continues counting. When a player gets to a multiple of that number, they call “product” (i.e. for the 3s times table, 1, 2, product, 4, 5, product). If a player forgets to say product or says is at the wrong time he or she is out. Play a few rounds that hit important multiplication tables (for 2^{nd} grade this might be 3, 4, and 6, for 3^{rd} grade this is likely 7 and 8). This game can be played whole group or in small groups.

## Mini-Lesson: Multiplication Strategies (10 minutes)

Tell students that today we are going to practice different ways to show multiplication and we are going to make a flipbook that we can use as a mathematics resource throughout the year. Review five ways to show multiplication problems:

## Draw a picture

- Show the problem in an array, a set that shows equal groups in rows and columns
- Show the problem in a grid
- Write the problem and use skip counting
- Write the problem and use repeated addition

Model how to show each one using the multiplication problems 3×4 and 7×8. Then, have students work in pairs to complete the representations for the problems 5×9 and 4×7.

After students are finished, have them share out and reflect:

- Which method was easiest for you?
- When might you use each method? (For example, solving a word problem, solving a mental math problem, explaining your thinking.)

## Make a Flipbook (20 minutes)

Pass out flipbooks to each student. Provide each student with five problems that they must incorporate into their flipbook. Differentiate the student experience, and ensure student independent understanding by differentiating the problems that each student has to use.

## Math Problem Solving (10 minutes)

Once students have completed their flipbooks, tell students that they are going to practice using their flipbooks to problem solve. Post a multiplication story problem on the board. Then, have students work independently for two minutes to solve the problem. After students have finished the problem, have a few students share how they solved it. Identify which strategies each used. If students finish early, they can complete another problem.

### Multiplication Story Problems:

- Carla has 5 boxes of crayons. Each box holds 12 crayons. How many crayons does Carla have?
- There are 8 candies in one bag. How many candies are there in all if Marta packs 9 bags of candies?
- Rob decorated 6 cakes. He put 4 candles on each cake. How many candles did he use?
- 7 students go to the library. Each student has 7 books to return. How many books are returned?

Tell students that throughout the year, we are going to be solving multiplication story problems, and we will use all the strategies throughout the year.

Resource:

51bb4a75259e17.12895384_Multiplication_Problem_Solving_Sheet [DOWNLOAD]