# Lesson 6

Compose and Decompose 10 with Pattern Blocks

### Lesson Purpose

The purpose of this lesson is for students to compose and decompose 10 in multiple ways in the context of pattern blocks.

### Lesson Narrative

In a previous unit, students solved Put Together/Take Apart, Both Addends Unknown story problems and decomposed 10 in more than one way. Students are not required to find all the ways to decompose 10, but they may use their understanding of how to find a number that makes 10 when added to a given number to help them find different decompositions.

- Engagement

- MLR8

Activity 2: Many Ways to Make 10

### Learning Goals

Teacher Facing

- Compose and decompose 10 in more than one way.
- Solve Put Together/Take Apart, Both Addends Unknown story problems involving shapes.

### Student Facing

- Let’s find different ways to make 10 using our pattern blocks.

### Required Materials

Materials to Gather

Materials to Copy

- Shake and Spill Stage 4 Recording Sheet Kindergarten
- Book of 10

### Required Preparation

Activity 2:

- Create a book for each student from the blackline master.
- Create a chart labeled with “trapezoids” and “rhombuses” as pictured:

### CCSS Standards

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 10 min |

Activity 2 | 20 min |

Activity 3 | 15 min |

Lesson Synthesis | 5 min |

Cool-down | 0 min |

### Teacher Reflection Questions

Which students did you talk to or observe during independent or group work time? Which students did you not get a chance to talk to or observe? How can you use centers in the coming days to check-in with students that you haven’t observed recently?