Preparation for Fraction Multiplication

Grades 3-5 / Math / Scaffolding
CCSS: Math.5.NF.B.4 Math.5.NF.B.6

Common Core State Standards

Math

Math

5

Grade 5

NF

Numbers & Operations--Fractions

B

Apply and extend previous understandings of multiplication and division

4

Apply and extend previous understandings of multiplication to multiply a fraction or whole number by a fraction.


a. Interpret the product (a/b) × q as a parts of a partition of q into b equal parts; equivalently, as the result of a sequence of operations a × q ÷ b. For example, use a visual fraction model to show (2/3) × 4 = 8/3, and create a story context for this equation. Do the same with (2/3) × (4/5) = 8/15. (In general, (a/b) × (c/d) = ac/bd.)


b. Find the area of a rectangle with fractional side lengths by tiling it with unit squares of the appropriate unit fraction side lengths, and show that the area is the same as would be found by multiplying the side lengths. Multiply fractional side lengths to find areas of rectangles, and represent fraction products as rectangular areas.

Download Common Core State Standards (PDF 1.2 MB)

Common Core State Standards

Math

Math

5

Grade 5

NF

Numbers & Operations--Fractions

B

Apply and extend previous understandings of multiplication and division

6

Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem.

Download Common Core State Standards (PDF 1.2 MB)

In Partnership with

and

Lesson Objective

Solve real world problems involving multiplication of fractions

Length

9 min

Questions to Consider

  • How does the number talk prepare students for the day's lesson?
  • What are the benefits of giving students private think time?
  • How does Ms. Farmer encourage students to explain their thinking to each other?

Watch all the videos in this series:

Collaborating Around Math: Before, During, and After Lessons

Developing a Math Team: Online and In Person

Common Core Standards
Math.5.NF.B.4, Math.5.NF.B.6

Supporting Materials

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  • Preparation for Fraction Multiplication Transcript

  • Student Work: Exit Task.PDF

  • Student Work: Parts A & B.PDF

  • IM Lesson Plan: Elementary.PDF

  • Coaching Notes.PDF

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