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A score says 62%. It does not say that your child adds the denominators, or that vertices and faces have been swapping places for three weeks. We notice the pattern, tell you what it is in plain words, and hand them the questions that put it right.
Made for one shared phone. You sign in once and hand it over. Your child practises; the report and the billing wait behind a PIN.
Two minutes, and your child can begin straight away.
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