Numbers Before and After | 1-20 | More and Less | Foundation

Numbers Before and After – One More & One Less to 20

Help your students build strong number sense with this Numbers Before and After resource, designed to support understanding of one more and one less for numbers to 20.

This activity provides purposeful practise with number order, helping students recognise how numbers change when one is added or taken away. It is ideal for consolidation and fluency, supporting students once numbers have been explicitly taught.

What's included?

• 1 One more and one less boards in black and white
• 12 One more and one less boards in black and white
• 4 Exit tickets to assess understanding

Aligned with the Australian Curriculum v9, this resource supports:

• AC9MFN01: name, represent and order numbers to at least 20.

Students develop confidence with early number relationships while strengthening mental maths skills and understanding of number sequences.

This resource is well suited to:

• Independent maths practise
• Small group instruction and intervention
• Daily number reviews
• Early finishers or maths rotations

Designed for Foundation and early Years classrooms, this low-prep resource fits seamlessly into your maths block and supports intentional, curriculum-aligned learning.

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