Activity Description Learn the difference between perimeter and area. A shape will be automatically generated with the area that you choose. Calculate the perimeter of this shape. Perimeter Explorer is one of the Interactivate assessment explorers.

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Perimeter Explorer

Place in mathematics curriculum:

• illustrate the notion of perimeter
• develop students' visualization skills
• practice students' skills at calculating perimeter

This applet allows users to practice calculating the perimeter of random shapes. This activity would work well in mixed ability groups of two or three for about twenty-five minutes if you use the exploration questions and ten to fifteen minutes otherwise.

Preparations for this activity:

• define and describe the concept of perimeter
• walk the class through finding the pattern for perimeter of the object using the information it the chart for question one of the exploration questions