Use this Year 1 One More and One Less within 100 Teaching PPT to help children understand how numbers change when we add one or take one away. Through visual models, children learn to spot one more and one less with confidence. The PPT uses Base 10, number charts and number lines to build strong number sense and deepen understanding.

Step-by-step learning is broken up throughout the presentation by chances to practise and assess, and there is both a reasoning and a problem-solving question to finish.

The final slide provides links to our other materials for this step so you can easily plan and resource your lessons.

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This resource is designed to align to White Rose Maths version 3. Classroom Secrets Limited is not affiliated with, endorsed by, or in any way connected to White Rose Education Limited. Our products are original to Classroom Secrets Limited and any reference to White Rose Maths is solely for the purpose of indicating compatibility and does not imply any association with White Rose Education.