I just showed my 5 yo how if you know 4^2 = 16, you can say how many balls are in a 4 x 4 square without counting them all.
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One of the best ways to motivate little kids to learn math (n = 2 admittedly) is to present it as secrets for cheating.
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When he actually counted them and found that he was right, there were 16, he was delighted.
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Cheating? Or shortcuts? The implication of cheating would not sit well with a lot of kids given what they are otherwise told.
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I find kids (n = 2 again) tend to be very amused by the thought of doing something secret and forbidden. Especially if no one gets hurt.
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That might have unintended negative long-term consequences.
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I'll try to increase your sample size, as, I suspect, will others - but selective reporting of results will be a huge bias in any data.
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Is math is more than a method for developing heuristics? If so, thanks mathematicians. You work, I shall play.
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Also try
@KumonUK. Think of it as real world training of kids brains a'la AI instead of rote. It makes arithmetic so easy for kids.Thanks. Twitter will use this to make your timeline better. UndoUndo
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Being able to calculate equations is also a nice way to cheat on verbal "brain teaser" questions they do for kids at school
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How, any examples?
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