### Lesson plan

# Geometry Real Word Problems

#### Learning Objectives

Students will be able to use the length-times-width strategy to solve rectangular area problems in real-world contexts.

#### Introduction

*(5 minutes)*

- Hold up a flat hand to the class and place a rectangular piece of paper over it that nearly covers its area.
- Explain how the rectangle’s area, the amount of space it takes up is
**Approximate**, or almost, the area of your hand. - Ask the class, “What do you know about area?” and take student responses.

#### Explicit Instruction/Teacher modeling

*(10 minutes)*

- Define
**Area**As the space inside a shape. Explain that uses in life include: Carpeting a room, sodding a lawn, or building a deck. - Show how to measure the paper rectangle with a ruler using the
**A = l x w formula**, explaining that you are really determining how many square units are in the area. Explain that the answer will be in square units and how to write that (for example:**3cm2**). - Supply paper, rulers, and scissors to your students. Have them cut out a rectangle with approximately the same area of their hand.
- Students will measure their rectangle's area and share their calculations with a partner.

#### Guided practise

*(10 minutes)*

- Distribute the Areas Around A Room worksheet and go over the instructions with your students.
- Complete the first exercise as a class, taking student responses and answering any clarifying questions.

#### Independent working time

*(15 minutes)*

- Instruct students to complete the remaining exercises with a partner or in small groups.

#### Differentiation

**Support**

- Students can work in teams where some members measure and others record measurements.
- Students may shadow members of another group, with the option to return to their original team.
- Provide pre-drawn rectangles using whole number sides that students may measure.

**Enrichment**

- Students may replace the Areas Around A Room exercise options with other items to measure.
- Measurements may be taken in smaller increments, like centimeters or 1/8 of an inch.

#### Technology Integration

- You will need a computer with internet access to project a video example of measurement.
- Use a projector to display the video to the class.

#### Assessment

*(5 minutes)*

- Ask students to use their work as an example to explain the area of their paper rectangles.
- Have students explain any problem from the Areas Around A Room worksheet.

#### Review and closing

*(5 minutes)*

- Students can share out clues, problems or wondering reflections, or leading with sentence frames. For example, “I could tell…" "I had a challenge with…" or "I wonder if…”