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Nelson Education > School > Mathematics K-8 > Math Focus > Grade 3 > Teacher Centre > Surf for More Math > Chapter 5 - Lesson 8

Surf for More Math


Lesson 8: Shapes with the Same Perimeter

Use these interactive activities to encourage students to have fun on the Web while learning about shapes with the same perimeter. Students can try these activities on their own or in pairs.


Draw different shapes for a given perimeter.

Builds Upon

Student Book pages 126–127

Instructions for Use

Cyberchase Airlines Builder asks students to make different shapes using the same perimeter. Note that students may need extra support understanding how to rotate lines and close off shapes, and how to make an “L” shape with the pieces. The first level of difficulty is most appropriate for students.

Click “Instructions” to read how to play, click “Next” after reading, then click “Play Game” to begin. Click “OK,” and then drag lines from the top right corner of the screen into the blue grid area to make a closed shape. To rotate a piece, click the piece so that it turns red, then click “Rotate Piece.” Pieces can be moved around on the grid as desired. When a shape is complete and all of the pieces have been used, click “Done” and then “Launch Ship!” Click “OK” to continue to make a different shape with the same perimeter (number of pieces). For help, click “Shapes You’ve Made” to see what you’ve already made and “Hint” for ideas of what shapes to make. When the first level is complete, click “OK” to continue to the next level.