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>I think it is ok as a brain teaser, but there will probably be one kid in the class to see it and all the other kids feel dumb or whatever. If you see the tri
by carlmr 5y ago
>I think it is ok as a brain teaser, but there will probably be one kid in the class to see it and all the other kids feel dumb or whatever.
If you see the trick, you save some time on the calculation. If you don't you have to add some more numbers. It's not that difficult.
- andi999 5y agoYes, but I am worried if a school uses question which can be solved with a trick that the whole instruction in class starts to revolve around tricks (which naturally will happen since the one kid who sees it will answer first). This trick discussion reminds me of the great anectode about von Neumann:https://news.ycombinator.com/item?id=5950755 https://news.ycombinator.com/item?id=5950755
- dubcanada 5y agoTricks? It's not tricks it's word problems, which is just as important as any other problem. You need to relate math to the real world and having a equation doesn't help, having stuff like Susan is taking a train at 2:32 for 50 kms going 60km/h what time did she get off helps people understand how to turn a real world problem into a math equation to solve it.