# Lesson 13

Formemos 10

### Lesson Purpose

### Lesson Narrative

In previous lessons, students used 10-frames and fingers to compose and decompose 10 in more than one way. In the previous lesson, students used the structure of a partially filled in 10-frame to determine how many more needed to be added to make 10. In this lesson, students develop strategies for finding the number that makes 10 when added to a given number.

While students may use any method that makes sense to them to find the given number, using 10-frames and fingers is highlighted because the structure allows students to see how many more are needed to make 10. As they choose a strategy, they will be making use of appropriate tools strategically (MP5).

- Engagement

- MLR8

### Learning Goals

Teacher Facing

- Fill in equations to represent compositions and decompositions of 10.
- Find the number that makes 10 when added to a given number.

### Student Facing

- Formemos 10.

### Required Materials

Materials to Gather

Materials to Copy

- 10-Frame Standard
- Number Mat 1–9
- Math Fingers Stage 4 Recording Sheet

### Required Preparation

Activity 3:

- Gather materials from:
- Math Fingers, Stages 1-4
- Shake and Spill, Stages 1-3
- Counting Collections, Stage 1
- Roll and Add, Stages 1 and 2

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 10 min |

Activity 2 | 15 min |

Activity 3 | 15 min |

Lesson Synthesis | 5 min |

Cool-down | 5 min |

### Teacher Reflection Questions

### Print Formatted Materials

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Student Task Statements | docx | |

Lesson Cover Page | docx | |

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Teacher Guide | Log In | |

Teacher Presentation Materials | docx | |

Blackline Masters | zip |