Targeted Year 1 resources on fact families: the 8 facts (addition and subtraction), reinforcing the inverse relationship between the two operations within 10. Materials build strong reasoning skills by requiring pupils to generate four addition and four subtraction facts from a single set of numbers. This key small step is vital for deepening understanding and achieving national curriculum mastery of number bonds and their applications. The CS Maths Scheme provides structured practice for this core relational concept.