Lesson 16

Estimate Products (optional)

Lesson Purpose

The purpose of this lesson is for students to reason about the value of the product of a whole number and a fraction greater than 1 and use the properties of operations to find the product.

Lesson Narrative

In previous lessons, students represented the decomposition of a rectangle with diagrams, expressions, and equations and found the product of a whole number and a fraction.
In this optional lesson, students will practice multiplying fractions by using their understanding of the properties of operations. This time, they will not be provided with a diagram to represent each product. They will also apply what they have learned about multiplying fractions to reason about the proximity of fractional areas to whole number areas.

  • Representation
  • MLR5

Learning Goals

Teacher Facing

  • Use estimation and the properties of operations to reason about the product of a whole number and a fraction greater than 1.

Student Facing

  • Let’s estimate products of a whole number and a fraction.

Required Preparation

CCSS Standards

Addressing

Building Towards

Lesson Timeline

Warm-up 10 min
Activity 1 20 min
Activity 2 15 min
Lesson Synthesis 10 min
Cool-down 5 min

Teacher Reflection Questions

What evidence did you see in today’s lesson that your students are extending their understanding of multiplication?

Suggested Centers

  • Rectangle Rumble (3–5), Stage 4: Whole Number and Fraction Factors (Addressing)
  • Can You Build It? (3–5), Stage 2: Multiple Rectangles (Supporting)

Print Formatted Materials

For access, consult one of our IM Certified Partners.

Additional Resources

Google Slides

For access, consult one of our IM Certified Partners.
PowerPoint Slides

For access, consult one of our IM Certified Partners.