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Common Core, Math
Students will make a multiplication flipbook of strategies to use throughout the year to strengthen multiplication fluency and problem solving skills.
CCSS.Math.Content.3.OA.A.1 Interpret products of whole numbers.
Students will define product as the result of multiplication.
Students will interpret and explain products as the number of objects in groups of objects
- Hotchalk.com Problem Solving Sheet for each student
- Flipbooks for each student (put together five pieces of paper and fold them over so that it creates a small book)
- Colored pencils/ drawing materials
Product: Multiplication Warm up (10 Minutes)
-Tell students that, in Math, we use words to describe specific things. (In addition we call two numbers that are added together a sum and in multiplication we call two numbers multiplied together a product)
-Remind students we have already started learning multiplication
-One way to practice multiplication is by skip counting. Tell students that you are going to play a game called “product”. You can play this game as a whole group or individual groups. Go through key fact families (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 2nd grade you might want to hit the 3, 4, and 6 multiplication tables, and for 3rd grade you might want to hit the 7 and 8 multiplication tables.
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 4 ways to show a multiplication problem:
- 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 use each one by showing examples using 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 and reflect:
- Which method was easiest for you?
- When might you use each method? (Solving a word problem, Solving a mental math problem, etc.)
Make a Flipbook (20 minutes)
Pass out flipbooks to each student. Provide each student with 5 problems that they must incorporate into their flipbook. Differentiate the student experience, and ensure student understanding by giving different problems and methods for each student to use.
Math Problem Solving (10 minutes)
Once students have completed their flipbooks, tell them that they are going to practice using their flipbooks to problem solve. Post a multiplication story problem on the board and have students work independently for 2 minutes to solve the problem. After the students have finished the problem, have a few students share how they solved it. Identify which strategies each used. If students finish early, they should 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?
Remind students that we will be using these various strategies throughout the school year so they should hold on to their flipbooks.