This PowerPoint was created with explicit instruction in mind. It will help teachers present information, develop concepts, demonstrate processes and revise. The language is concise. The graphics are relevant and eye-catching.

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Focus

• recognise that perimeter is the sum of the lengths forming the boundary of a shape or an enclosed region
• measure perimeters of enclosed regions using non-standard and standard units
• devise and use strategies for calculating perimeters of rectangles drawn on grid paper