# Lesson 5

Tiny House: Cost

### Lesson Purpose

The purpose of this lesson is for students to apply what they’ve learned about operations to calculate the cost to finish a space in a tiny house.

### Lesson Narrative

In a previous lesson, students used what they learned about area and perimeter to design a tiny house. In this lesson, they apply their knowledge of operations to calculate the cost of finishing one of the rooms of their tiny house. Students engage in aspects of mathematical modeling as they make decisions about quantities, relate measurements and costs, and interpret their results in context (MP4).

If students need additional support with the concepts in this lesson, refer back to Unit 3, Section A in the curriculum materials.

- Action and Expression

- MLR8

### Learning Goals

Teacher Facing

- Solve problems about the cost of finishing a room in a tiny house.

### Student Facing

- Let’s calculate the cost of finishing a room in a tiny house.

### Required Materials

Materials to Gather

### Required Preparation

Activity 1:

- Each student needs the tiny house design they created in the previous lesson.

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 35 min |

Lesson Synthesis | 10 min |

Cool-down | 5 min |

### Teacher Reflection Questions

What strategy did you anticipate today? Which did you not anticipate?