Lesson 3
Multipliquemos fracciones unitarias
Lesson Purpose
The purpose of this lesson is for students to represent products of unit fractions using diagrams and equations.
Lesson Narrative
In previous lessons students represented products of unit fractions with diagrams and expressions. In this lesson students connect the diagrams and expressions, using the structure of the diagram to calculate the value of the expression. Students use the diagrams to find the value of many expressions and, toward the end of the lesson, they find the value of an expression, representing a product of unit fractions, without being given a diagram.
- Engagement
Activity 1: Observemos patrones en expresiones
Learning Goals
Teacher Facing
- Find the product of 2 unit fractions.
Student Facing
- Resolvamos ecuaciones.
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
Some students may be multiplying the numerators and denominators without considering why this strategy works. Why is it important for students to understand how the diagrams represent products of fractions? What questions can you ask to help students connect the diagrams to the procedures they are using?
Suggested Centers
- Rolling for Fractions (3–5), Stage 4: Multiply Fractions (Addressing)
- Five in a Row: Multiplication (3–5), Stage 4: Three Factors (Supporting)