# Represent a change story using addition and subtraction symbols

I can represent a change story using addition and subtraction symbols.

# Represent a change story using addition and subtraction symbols

I can represent a change story using addition and subtraction symbols.

## Slide deck

## Lesson details

### Key learning points

- A change can be positive or negative.
- A change can be represented by a negative number.

### Common misconception

Pupils believe that subtraction is commutative and therefore equations can be written in any order.

Model with physical resources such as marbles in a bag that 4 - 6 results in a negative change but 6 - 4 results in a positive change.

### Keywords

Positive change - An overall amount has increased.

Negative change - An overall amount has decreased.

Negative number - Any value less than zero.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

one number, calculation or expression is equal to another

the result of subtracting one number from another

finding the total, or sum, by combining two or more numbers

make something different

## Exit quiz

### 6 Questions

the number of marbles added to the bag

the number of marbles taken out of the bag

the change in the number of marbles