Addition starts with two quantities we can identify

Keep the starting collections visible long enough for children to name them. After combining, ask how the total relates to those parts; this connects the written addition to a change they can describe.

Retain the identities of the two starting groups during the model. Combining describes what happens to their quantities, not just a keyword instruction.

Three counters joined with four counters make seven: 3 + 4 = 7.

Hold on to the starting groups

Count each starting group. Combine without losing group information. Record the total and equation.

An equation should describe the model actually used. Which part of the model represents each addend?

Use different shapes rather than colour alone.

Resources

• Maths Puzzle Generator — Choose arithmetic or missing-number questions only when they match the number relationship being explored.

Further reading

• Australian Curriculum Version 9 — Mathematics

Read next

• Counting on without losing track of the added amount
• Subtraction can compare two collections without taking any away
• Rotate an array and investigate what stays the same

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