# Lesson 13

Dominoes to 5

### Lesson Purpose

The purpose of this lesson is for students to develop fluency with adding and subtracting within 5 as they identify compositions and decompositions of numbers to 5.

### Lesson Narrative

In a previous lesson, students created their own dot images and identified different compositions and decompositions of numbers to 5. In this lesson, students work with dominoes. Students sort dominoes by total, which encourages them to recognize different compositions and decompositions of numbers to 5 and think about both the parts and the total at the same time. Students also compare the number of dots on the dominoes.

If students need additional support with the concepts in this lesson, refer back to Unit 5, Section B in the curriculum materials.

- Representation

- MLR8

Activity 2: Compare Dots on Dominoes

### Learning Goals

Teacher Facing

- Recognize compositions and decompositions of numbers to 5.

### Student Facing

- Let’s sort different ways to make numbers to 5.

### Required Materials

Materials to Gather

Materials to Copy

- Sorting Chart 1-5
- Domino Cards

### Required Preparation

Activity 1:

- Create a set of domino cards from the blackline master for each group of 2. If actual dominoes are available, give students the dominoes which show a total of 5 or less.

Activity 2:

- Each group of 2 needs the domino cards from the previous activity.

Activity 3:

- Gather materials from:
- 5-frames
- Roll and Add
- Bingo
- Geoblocks
- Find the Value of Expressions

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 10 min |

Activity 2 | 15 min |

Activity 3 | 20 min |

Lesson Synthesis | 5 min |

Cool-down | 0 min |

### Teacher Reflection Questions

Students are expected to fluently add and subtract within 5 by the end of kindergarten. How does the work students do in this lesson prepare them to fluently add and subtract within 5?