Unit 10 Measurement and Geometry

Lesson 4: Area of Triangles and Trapezoids

Goal:

Know how to find the area of triangles and trapezoids.

Essential Question:

How can you derive the formula for a trapezoid?

APK:

1. Do these shapes have the same area?  How do you know? Find the area of both shapes and compare.
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.

trapezoid

Learning Resources:

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

In-Class Worksheet:

With your partner, complete the Reading Strategies and Problem Solving Worksheets.
lesson_4_reading_strategies_and_problem_solving.pdf
File Size: 85 kb
File Type: pdf
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Reflection/ Summary:

1. In in your IN9, answer the following question in complete sentences.
When calculating area, we use a square units.
How is this different from linear units?
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_4_homework_b_and_puzzler.pdf
File Size: 71 kb
File Type: pdf
Download File

Level C Homework

lesson_4_homework_c_and_challenge.pdf
File Size: 62 kb
File Type: pdf
Download File

Math Humor:

What kind of a figure should you use
​to catch a mouse?

A mouse trap-ezoid.