Foundational Year 1 resources on equal and unequal groups, establishing the core concept required for multiplication and division in the KS1 Maths curriculum. Activities employ the CPA approach to build conceptual understanding of partitioning sets fairly, which underpins the principle of 'equal groups'. This essential small step is crucial for reasoning about sharing and is vital for national curriculum mastery. The CS Maths Scheme provides clear visual comparisons for group analysis.