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Listed under:  Scales (Equipment)

### Balance the cups

Put blocks (or balls) into the cups on the scales to make them balance, using the number rules A = B + C and A + B = C + D. Use your knowledge of addition and multiplication to help you work out how many blocks you need in each cup. Finish the number sentence to show an equal number of blocks on each side. This learning ...

### Balance the cups: use the rule 1

Put blocks into the cups on the scales to make them balance, using the number rule A = B + C. Use your knowledge of addition to help you work out how many blocks you need in each cup. Finish the number sentence to show an equal number of blocks on each side. This learning object is the first in a series of three learning objects.

### Balance the cups: use the rule 2

Put balls into the cups on the scales to make them balance, using the number rule A = B + C. Use your knowledge of addition and multiplication to help you work out how many balls you need in each cup. Finish the number sentence to show an equal number of balls on each side. This learning object is the second in a series ...

### Balance the cups: use the rule 3

Put blocks into the cups on the scales to make them balance, using the number rule A + B = C + D. Use your knowledge of addition to help you work out how many blocks you need in each cup. Write the number sentence to show an equal number of blocks on each side. Look for patterns to help you think of another solution. This ...

### Balance the blobs

Balance scales by using blobs. Explore how many black blobs and white blobs balance each other. Discover the rule that balances the scales with the correct number and type of blobs. For example, 2 black blobs balances 1 white blob. Find out how many black blobs balance 2 white blobs. Build a number pattern. Then use the ...

### Balance the blobs: find the rule 1

Balance scales by using blobs. Using unit ratios, such as 1:3, 2: 1 or 1:4, explore how many black blobs and white blobs balance each other. Discover the rule that balances the scales with the correct number and type of blobs. For example, 2 black blobs balance 1 white blob. Find out how many black blobs balance 2 white ...

### Balance the blobs: find the rule 2

Balance scales by using blobs. Using non-unit ratios, such as 3:2, 4:5 or 5:2, explore how many black blobs and white blobs balance each other. Discover the rule that balances the scales with the correct number and type of blobs. For example, 3 black blobs balance 2 white blobs. Find out how many black blobs balance 4 white ...

### Balance the blobs: find the rule 3

Balance scales by using blobs. Using three-term ratios, such as 1:2:3, 5:1:3 or 3:4:5, explore how many black, white and grey blobs balance each other. Discover a set of rules that balances the scales with the correct number and type of blobs. For example, 1 black blob balances 2 white blobs. Then find out how many grey ...

### Gold scales, c1890

This is a set of wall-mounted brass scales for weighing gold.

### reSolve: Algebra - Equivalence

This sequence of two lessons builds students' understanding of equivalence as balance. The equals sign is used to indicate the same value on both sides of an equation. Students develop their understanding of equivalence by looking at balancing scales with blocks of different weights. Each lesson is outlined in detail including ...

### Mass

This is a colourful animation, with audio commentary, that defines mass and lists some of the words that are commonly used to describe the mass of an object, including 'heavy' and 'light'. Using these words, the resource categorises objects and compares their masses relative to each other. The resource poses questions and ...