View source for Properties of rectangles - perimeter and area/teaching approach

A problem to inspire {{teachtag|higher order}} {{teachtag|questioning}} especially in {{teachtag|whole class}} {{teachtag|dialogic teaching}} encouraging pupils to engage in {{teachtag|mathematical thinking}} and {{teachtag|language}}. You could use {{tooltag|Geogebra}} in this investigation, as an example of same-task {{teachtag|group work}}.