Using the scroll bars - centre the Perimeter Explorer in the window to your right so that you are able to read these instruction while using the explorer.

Perimeter is defined as the distance around an object.
Area is defined as the number of square units it takes to cover an object completely.

The objective of this activity is to practice determining the perimeter of a shape.

Materials: You will need a piece of graph paper and a pencil to record your work.

Procedure:

1. In the Perimeter Explorer, enter an amount in "The area of this shape is:___.
2. Click on DRAW NEW SHAPE. A figure will appear on the grid paper. Count the linear units to determine the perimeter of the shape. Enter your answer in "What is the perimeter of this shape? ___ units.
3. Check your answer. Draw the shape on your grid paper and record your answer next to the drawing.
4. REPEAT steps 1-3 ten times. (You will have completed 10 perimeter questions when you are done).
5. Try to use small values for area nd large values to give yourself practice determining the perimeter for different sized shapes.
6. Save your answer sheet for your instructor.

The Perimeter Explorer was created by The Shodor Foundation.