Reflection: Rigor Dividing Fractions - Section 3: Independent Practice


Many of my students were able to use the algorithm and complete the Independent Practice problems early.  I presented them with a problem that included 3 fractions.  I asked them to think about how they could use the same algorithm, but apply it to this problem.

After reviewing the I.P., we discussed the challenge problem.  Students developed two different strategies.  With the first strategy, students found the quotient of the first two fractions and then used that answer to work with the third fraction.  With the second strategy, students noticed that they could keep the first fraction, change the division operations to multiplication and find the reciprocals of the second and third fractions.

The challenge problem was an opportunity for students to think beyond the algorithm.

  Challenge Problem
  Rigor: Challenge Problem
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Dividing Fractions

Unit 7: Multiplying and Dividing Fractions
Lesson 4 of 10

Objective: SWBAT develop an algorithm for dividing fractions.

Big Idea: What does dividing fractions have to do with multiplication?

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