Primary schools to ban calculators. Is this wise?

David Jones/PA

Education Minister, Liz Truss, has announced that calculators will be banned in primary schools from 2014, because pupils are relying on them too much, and are leaning on them for even straightforward maths problems. They will no longer be able to use them in national tests for 11-year-olds.

She says that the aim is to improve standards, but there's a risk that the plan could backfire.
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