Finding Area by Decomposing & Rearranging

Warmup

Activity #1

Find Area of a Regular Plane Figure by Counting Enclosed Squares.

In this activity, you are going to find the area of a figure by counting the squares that are enclosed within the figure. Follow the instructions below.

  • Count the enclosed squares in the figure and enter the area below.
  • Check the Hint box if you need help.​
  • Fill in the blank space below.

  • Fill in the blank space below.

  • Fill in the blank space below.

  • Fill in the blank space below.

  • Fill in the blank space below.

  • Fill in the blank space below.

  • Fill in the blank space below.

Activity #2

Find Area by Decomposing and Rearranging.

In this activity, you are going to use the applet below to carry out an investigation into the relationship between the formula for the area of a rectangle, and the formula for the area of a parallelogram.

  • Pull the slider to the right to create a new figure.​
  • Answer the questions that follow.
  • Answer the questions below.

Quiz Time

The quiz below can be completed at www.ixl.com. After a trial practice, click on our subscription link in the video, to see how much you’ll save when you signup from our website.