Math Focus 2
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# Surf for More Math

## CHAPTER 10: MASS

### Lesson 6: Keeping Numbers in Balance

Use these interactive activities to encourage students to have fun on the Web while learning about the mass of objects. Students can try these activities on their own or in pairs.

Goal

Make connections between number and measurement.
[C, CN, R]

Instructions for Use

Bunny Balance lets students estimate the mass of objects using non-standard units.

To use Bunny Balance, drag the bunnies onto the seesaw. Try to make them balance.

Pan Balance prompts students to use a pan balance to determine which item is heavier.

To use Pan Balance, place weights on each pan of the balance by dragging the shapes and releasing the mouse button. The Count Items button shows how many shapes are on the balance. The Show Array button shows how many shapes are on the balance in a row. The Reset Balance button clears the balance and keeps the weights the same. The New Problem button clears the balance and changes the weights.