What is a Rectangle?.

Measures, Shape and Space
By David Clemson, Wendy Clemson
6. Measures. Term. Framework links. Spring. 7-8 10 85-101 Measures including problems 112-117 Handling data Understand area measured in square centimetres. ... Suggest suitable units and equipment to estimate or measure mass.
Geometry by Construction: Object Creation and Problem-solving in Euclidean and Non-Euclidean Geometries
By Michael Mcdaniel
"'Geometry by construction' challenges its readers to participate in the creation of mathematics.
Measures, Shape and Space
By David Clemson, Wendy Clemson
The series provides inspiring, flexible activities that can be fitted into any maths scheme.