Boris • Subtraction

Boris is an interactive, web-based diagnostic tool to support teachers in dealing with children’s gaps and misconceptions in maths.

Boris deals with three key areas that the QCA regularly reports are areas of weakness exhibited by KS1 and KS2 children in end of KS SATs and optional QCA tests: subtraction, division and FDPRP (fractions, decimals, percentages, ratio and proportion). Boris includes guidance papers on what makes these areas difficult to teach.

Boris links objectives related to the three areas to appropriate probing questions to support diagnosis of specific misconceptions or gaps. These, in turn, are linked to teaching images to address the difficulties that children are encountering.

Addressing gaps and misconceptions in subtraction

• Why is teaching subtraction difficult?
• Subtraction objectives
• List of images for teaching subtraction

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An interactive, web-based, diagnostic tool to support teachers dealing with children’s gaps and misconceptions in mathematics

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