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Surf for More Math

Lesson 4 - Making It Fair

To encourage students to have fun on the Web while learning about Making It Fair, here are some games and interactive activities they can do on their own or in pairs.



Equalize groups.


Instructions for Use

Sharing Cakes lets students share quantities equally among the members of groups of different sizes.

To use Sharing Cakes, type in or drag the number of cakes and the number of children into each text box. There should be not more than 5 children and 4 cakes. Click "Enter Settings". Click "Cut Cake". Cut the cake into slices and drag each piece onto the plates equally.


I Know That lets students group objects equally.

To use I Know That, enter your registration information and click ‘Submit’, or click on ‘Maybe Later’ in the bottom middle of the screen to proceed to the activity. Click on the "Give Me a Problem" button on the scratch pad. Problems are presented on the PDA screen.

Use the counters (below the trashcan) to make sets and practice skip counting. Click and drag the counters in or out of the counter box, the corresponding number is displayed in the "How many?" box.

Counters are shown in the counter box (the main workspace) along with the total number in the set. To change the number of counters in the box, drag numbers in or out of the counter box; or click on one of the numbers above the counter box.

To use the Counter group, (below the counters), click on a number to select the counter group to use in skip counting. When students click on one of the numbers in the counter group, the counter group changes and the corresponding number sequence is displayed.

Click on one of the numbers (the line above the trashcan) to change the set of counters in the counter box, and the number displayed in the "How many?" box.

Click the "New" button to clear the scratch pad and select a different counter.

To remove counters from the counter box, click and drag them into the trashcan.