1. Graham Cracker Activity DIVIDING FRACTIONS

2. Think about it…..  What will happen if you divide 1 by ½?  Now what do you think will happen when you divide 2 by ½?

3. September 4 th : Fluency Friday Complete on whiteboards. 1) 10,143 ÷ 18 2) Check the boxes beside all expressions that are equal to 9.215 □ 6.745 + 2.4 □ 5.698 + 3.517 □ 15.086 – 6.791

4. Making Hot Cocoa One thermos of hot chocolate uses 2 / 3 cup of cocoa powder. How many thermoses can Nelli make with 3 cups of cocoa powder? a. Solve the problem by drawing a picture. b. Explain how you can see the answer to the problem in your picture. c. Which of the following multiplication or divisions equations represents this situation? Explain your reasoning. 3 x 2 / 3 = ?3 ÷ 2 / 3 = ? 2 / 3 ÷ 3 = ?

5. Making Hot Cocoa d. Solve the arithmetic problem you chose in part (c) and verify that you get the same answer as you did with your picture.

6. Reciprocals can help you divide by fractions. Two numbers are reciprocals if their product is 1.

7. Dividing Fractions CAN THE STUDENT FIND THE QUOTIENT FROM A FRACTION BY USING MODELS AND EQUATIONS? 6.NS.1 Brainpop over x and dividing fractions http://www.brainpop.com/math/numbersandoperations/multiplyinganddividingfractions/

8. Dividing Fractions What does it mean to divide 2 fractions???

9. Solve the problem by drawing a model. 4 / 5 ÷ 2 / 5

10. Draw a model to solve 2 ½ ÷ ½

11. Solve the problem by drawing a model. 4 ÷ ¾

12. Dividing Fractions CAN THE STUDENT FIND THE QUOTIENT FROM A FRACTION BY USING MODELS AND EQUATIONS? 6.NS.1 Brainpop over x and dividing fractions http://www.brainpop.com/math/numbersandoperations/multiplyinganddividingfractions/

13. Solve the problem by drawing a model. 2 ¾ ÷ 1 1 / 8

14. Writing Story Problems  Step 1: Decide on an interpretation (measurement or partitive).  Step 2: Draw a model.  Step 3: Find the answer.  Step 4: Choose a unit.  Step 5: Set up a situation based on the model. This means writing a story problem that is interesting, realistic, and short. It may take several attempts before you find a story that works well with the given dividend and divisor.

15. Possible Answer Stories  Tina uses 1 / 8 oz. of cinnamon each time she makes a batch of coffee cake topping. How many batches can she make if she has ½ oz. left in her spice jar?

16. More Story Problems  Write a story problem using the partitive interpretation of division for the following:

17. What’s the Error A student said the reciprocal of 6 2 / 3 is 6 3 / 2. Explain the error to your partner or group. Then write it correct.

18. Procedural…..skill & drill 1) Rewrite as multiplication (multiplicative inverse) using the reciprocal. 2) Multiply by the reciprocal. 3) Multiply the fraction 4) Simplify

19. Whiteboards Find the reciprocal. 1. 2. Divide. Write each answer in simplest form. 3. ÷ 204. 3 ÷ 2 Draw a model to solve the problem. 5. Rhonda put 2 pounds of pecans into a -pound bag. How many bags did Rhonda fill? 1 11 __ 8 13 __ 4 7 1 2 1 2 3 4 1 4 11 1 __ 13 8 __ 1 35 __ 7 5 2 5, or 1 11 bags

20. Exit Ticket Write a real world situation for the following problem. Then draw a model and solve it procedural. 5 ÷ ¼

21. Dividing Fractions CAN THE STUDENT FIND THE QUOTIENT FROM A FRACTION BY USING MODELS AND EQUATIONS? 6.NS.1 Brainpop over x and dividing fractions http://www.brainpop.com/math/numbersandoperations/multiplyinganddividingfractions/

22. Stop & Jot  Discuss the relationship between dividing by 4 and multiplying by ¼.

23. Problem Solving Find the missing number in the following division problem. ÷ 5 / 6 = 1 4 / 5

24. More examples Dividing Fractions for white boards