# Lesson 4

Construyamos fracciones a partir de fracciones unitarias

### Lesson Purpose

The purpose of this lesson is for students to build non-unit fractions and whole numbers from unit fractions.

### Lesson Narrative

In the previous lesson, students named non-unit fractions and made sense of the notation used to write them. In this lesson, students play a game in which they build non-unit 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 non-unit fractions and whole numbers from unit fractions.

### Student Facing

- Construyamos otras fracciones a partir de fracciones unitarias.

### Required Materials

Materials to Gather

Materials to Copy

- Secret Fractions Stage 1 Gameboard, Spanish
- Secret Fractions Stage 1 Cards

### 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

Warm-up | 10 min |

Activity 1 | 20 min |

Activity 2 | 15 min |

Lesson Synthesis | 10 min |

Cool-down | 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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Student Task Statements | docx | |

Lesson Cover Page | docx | |

Cool Down | Log In | |

Teacher Guide | Log In | |

Teacher Presentation Materials | docx | |

Blackline Masters | zip |