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Surf for More Math

Lesson 2 - Areas of Irregular 2-D Shapes


Use this interactive activity to encourage students to have fun on the Web while learning about areas of irregular shapes. Students can try this activity on their own or in pairs.


Develop methods to measure the areas of irregular 2-D shapes.

Builds Upon

Student Book pages 224

Instructions for Use

Area Explorer allows students to measure the area of irregular shapes.

To use Area Explorer, slide the "Adjust Perimeter" slider to the left and then click the "Draw New Shape" button. Determine what the shape's area is and type the answer into the text box. Click the "Check Answer" button to check your answer.

To display a new shape, click the "Draw New Shape" button.