Unit 10 Measurement and Geometry

Lesson 3: Area of Rectangles and Parallelograms

Goal:

Know how to estimate the area of irregular figures and find the area of rectangles and parallelograms.

Essential Question:

How can you derive a formula for calculating area of a parallelogram?

APK:

1. Answer the following questions:
  • What is the perimeter of a square with side lengths of 15 inches?
  • What is the perimeter of a rectangle with a length of 16 cm and a width of 11 cm?
Challenge: Two wibbles equals four wabbles, and eight wabbles equal two bibbles.  If a square has a perimeter of 16 wibbles, what is its area in square bibbles?
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.

rectangle
​parallelogram

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_3_reading_strategies_and_problem_solving.pdf
File Size: 109 kb
File Type: pdf
Download File

Reflection/ Summary:

1. In your IN9, compare and contrast the formulas for finding the area of a rectangle and the area of a parallelogram using a Venn diagram.
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_3_homework_b_and_puzzler.pdf
File Size: 90 kb
File Type: pdf
Download File

Level C Homework

lesson_3_homework_c_and_challenge.pdf
File Size: 100 kb
File Type: pdf
Download File

Math Humor:

What do you call a crushed angle?

A Rectangle (a wrecked angle)