Unit 3, Lesson 5
Multiply a Unit Fraction by a Non-Unit Fraction
Grade 5
Preparation
Lesson Purpose
The purpose of this lesson is for students to use diagrams and expressions to calculate the product of a unit fraction and a non-unit fraction.
Lesson Narrative
While the previous lesson used a context to help visualize fractions and their product, in this lesson the fractions are more complex. There is no context so students can focus on how the diagrams and expressions relate to the value of the product. In this lesson, students also begin to work with side lengths that are fractions greater than 1. Students also practice estimating areas of rectangles where the side lengths are not shown.
- Action and Expression
- MLR8
- Explain (orally and in writing) strategies to determine the product of a unit fraction and a non-unit fraction.
- Represent the product of a unit fraction and a non-unit fraction with diagrams and expressions and interpret (orally and in writing) the representations.
- Let’s multiply a unit fraction and a non-unit fraction.
Required Preparation
None
Teacher Reflection Questions
How did the work of the previous lessons lay the foundation for students to be successful in the first activity of this lesson?
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