Lesson 15
Multiply More Fractions
Lesson Purpose
The purpose of this lesson is for students to apply their understanding of the properties of operations to multiply whole numbers and fractions greater than 1 written as mixed numbers.
Lesson Narrative
In previous lessons, students used the properties of operations to write equivalent expressions in order to find products of fractions greater than 1 written as mixed numbers.
In this lesson, students apply their understanding of the properties of operations to multiply whole numbers and fractions greater than 1 written as mixed numbers. In each activity, encourage students to think flexibly, using everything they have learned about fraction decomposition, multiplication, and the properties of operations.
- Engagement
- MLR7
Learning Goals
Teacher Facing
- Multiply whole numbers and fractions using the properties of operations.
Student Facing
- Let’s multiply mixed numbers.
Required Preparation
CCSS Standards
Addressing
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
Who has been sharing their ideas in class lately? Make a note of students whose ideas have not been featured in class and look for an opportunity for them to share their thinking in tomorrow’s lesson.
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)