Dedicated Year 2 resources for exploring fact families (the 8 facts) within 20, reinforcing the inverse relationship between addition and subtraction, a core KS1 Maths objective. Activities build strong reasoning skills by requiring pupils to generate all related facts from a single set of numbers, ensuring deepening understanding. This crucial small step supports mastery of number relationships and is vital for national curriculum expectations. The CS Maths Scheme provides structured practice using the part-whole model.