Unit 10 Measurement and Geometry

Lesson 5: Area
of Composite Figures

Goal:

Know how to break a polygon into simpler parts to find its area.

Essential Question:

What shapes in the real world are really composite figures?

APK:

1. What is the formula for calculating the area of a.....
rectangle?
triangle?
parallelogram?
trapezoid?
2. In your IN9, create and Effort/Understanding/Behavior chart, and rate yourself o a scale of 1-4 on what you think you will do today.

Vocabulary:

Use the following link to go to A Maths Dictionary for Kids, and look up the following word(s).  Be sure to write the definition(s) in your IN9.

regular polygons
irregular polygons (under irregular)
composite figure

Learning Resources:

Watch the following videos.  Be sure to take notes in your IN9.

Composite Figure

In-Class Worksheet:

With your partner, complete the Reading Strategies and Problem Solving Worksheets.
lesson_5_reading_strategies_and_problem_solving.pdf
File Size: 197 kb
File Type: pdf
Download File

Reflection/ Summary:

1. In your IN9, draw a figure that can be broken up into two rectangles.  Label the lengths of each side.  Explain how you can find the area of the figure.  Next, find the area of your composite figure.
2. In your IN9, complete the Effort/ Understanding/ Behavior chart by rating yourself on a scale of 1-4 on how well you think you did in class today.

Homework:

Complete either Level B (Worksheet B and Puzzler) or Level C (Worksheet C and Challenge).  Write your answers in your IN9.

Level B Homework

lesson_5_homework_b_and_puzzler.pdf
File Size: 269 kb
File Type: pdf
Download File

Level C Homework

lesson_5_homework_c_and_challenge.pdf
File Size: 151 kb
File Type: pdf
Download File

Math Humor: