Use a pan balance to find two collections of objects that have the same mass, eg a collection of blocks and a collection of counters
| 1. | Balancing Act - informal units, combining masses | |
| 2. | Balancing Act - informal units, balancing 2 cakes | |
| 3. | Balancing Act - combining masses, informal units | |
| 4. | Balancing Act - combining masses, informal units | |
| 5. | A Weighty Issue - equal arm balance, half a kg units | |
| 6. | A Weighty Issue - equal arm balance, half a kg units | |
| 7. | A Weighty Issue - equal arm balance, 1kg units | |
| 8. | A Weighty Issue - equal arm balance, 1kg units |