Challenging Year 4 resources for calculating the perimeter of a rectilinear shape (L-shapes/T-shapes), applying deduction and arithmetic to geometry, a key KS2 Maths objective. Activities build deepening understanding and reasoning by requiring pupils to calculate missing side lengths before summing all sides. This crucial small step supports mastery of perimeter and is vital for national curriculum expectations. The CS Maths Scheme provides structured visual and calculation tasks.
Full step description and curriculum objectives