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Dividing Fractions by Fractions 6A Academic Lab Math Intervention Lesson 2 of Dividing Fractions by Fractions

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Let’s watch two video clips explaining what it means to divide fractions by fractions. Quick Review: Dividing Fractions by Whole Numbers Using Models ◦http://learnzillion.com/lessons/203-divide-fractions-by- whole-numbers-using-modelshttp://learnzillion.com/lessons/203-divide-fractions-by- whole-numbers-using-models This video is just over 5 minutes. Further Explanation: Dividing Fractions by Fractions Using Models ◦http://learnzillion.com/lessons/204-divide-fractions-by- fractions-using-modelshttp://learnzillion.com/lessons/204-divide-fractions-by- fractions-using-models This video is just 5 minutes.

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Using arrays to model dividing fractions by fractions.

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P1P2P3 P4P1P2 P3P4 ?? P1P2P3 P4P1P2 P3P4

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Using the standard algorithm to divide fractions by fractions Using the same lasagna pan from the array model, let’s solve this division problem using the standard algorithm.

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Compare the model to the algorithm, which method makes sense to you! Array Model Solution Standard Algorithm: Calculation process/steps Each person would receive 2 full squares and ½ of another square for a total of 2½. P1P2P3 P4P1P2 P3P4 P1 P2 P3 P4

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Student Practice- On a piece of paper, make an ARRAY MODEL to help you complete the division problem. Remember! Use a rectangle or square array! Pies and pizzas don’t have to be drawn as a circle!

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Student Practice- On a piece of paper, make an ARRAY MODEL to help you complete the division problem. Remember! Pies and pizzas don’t have to be drawn as a circle! Use a rectangle or square array! First, create an array model with 10 equal size pieces then shade the remaining 9 pieces leaving the piece that Brooke ate empty. Second, equally share the remaining FULL pieces between the 3 friends. Third, count the number of pieces for each friend. Finally, how many equal pieces will each friend get? Friend1Friend2Friend3Friend1Friend2 Friend3Friend1Friend2Friend3 3 out of 10 TOTAL pieces = 3/10

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Student Practice- On a piece of paper, solve this same problem but using the standard division of fractions algorithm. Remember! Use a rectangle or square array! Pies and pizzas don’t have to be drawn as a circle!

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Student Practice- On a piece of paper, solve this same problem but using the standard division of fractions algorithm. 3

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Congrats YOU have completed Lesson #2 of dividing fractions by fractions!

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Divide Fractions Lesson 2.3. Using Mental Math ÷How many groups of are in ? 1414 ÷ 3 How many groups of are in 3? 3434 ÷ 3 What are the 3 equal groups.

Divide Fractions Lesson 2.3. Using Mental Math ÷How many groups of are in ? 1414 ÷ 3 How many groups of are in 3? 3434 ÷ 3 What are the 3 equal groups.

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