Abstract
This paper considers task design related to the geometrical understanding of a class of nine- and ten- year old children. The research was interested in identifying the principles underpinning these tasks. A first iteration involved a nationally-recognised sorting task (National Numeracy Strategy, DfEE, 2000) and a second principled task was designed to delve further into the children?s understanding of the inclusive nature of the definitions of quadrilaterals. We consider to what extent van Hiele?s levels of geometrical understanding can be used at the classroom level and raise the issue of appropriate tasks for children to engage with in order to challenge and stimulate their understanding of geometric definitions.
Alice Hansen and Dave Pratt
How Do We Provide Tasks For Children To Explore The Definitions Of Quadrilaterals?