Lesson 4
Build Fractions from Unit Fractions
Lesson Purpose
The purpose of this lesson is for students to build nonunit fractions and whole numbers from unit fractions.
Lesson Narrative
In the previous lesson, students named nonunit fractions and made sense of the notation used to write them. In this lesson, students play a game in which they build nonunit fractions from unit fractions (for example, they try to collect enough cards showing \(\frac{1}{6}\) to make \(\frac{3}{6}\)). They record these fractions on a fraction strip diagram. Then, students partition and shade diagrams to represent situations involving fractional lengths and consider the location of the endpoint of a fractional length. This will be helpful in subsequent lessons, when students represent fractions on a number line.
 Engagement
 MLR8
Learning Goals
Teacher Facing
 Build nonunit fractions and whole numbers from unit fractions.
Student Facing
 Let’s build other fractions from unit fractions.
Required Materials
Materials to Gather
Materials to Copy
 Secret Fractions Stage 1 Cards
 Secret Fractions Stage 1 Gameboard
Required Preparation
Activity 1:
 Create a set of cards from the blackline master for each group of 2.
 Print extra gameboards for the launch and groups that have time for an extra game.
 Students might want a folder or divider so their partner doesn’t see their cards.
Lesson Timeline
Warmup  10 min 
Activity 1  20 min 
Activity 2  15 min 
Lesson Synthesis  10 min 
Cooldown  5 min 
Teacher Reflection Questions
How did having visual representations help students think about building fractions from unit fractions in today’s lesson?
Suggested Centers
 Mystery Number (1–4), Stage 3: Fractions with Denominators 2, 3, 4, 6 (Addressing)
 Number Line Scoot (2–3), Stage 2: Halves, Thirds and Fourths (Addressing)
Print Formatted Materials
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Additional Resources
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