He may be about the age you could introduce the concept of a proof. IIRC this was the first proof I taught my older son.
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this is a really good video for that https://www.youtube.com/watch?v=Uj3_KqkI9Zo …
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What would you do if it were "I know the biggest prime number"

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We're ok. I taught the 8 yo that proof a couple weeks ago.
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See if you can get them to extend that same proof to come up with a crude estimate for an upper bound for p_n, the n-th prime. It's fun!
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Perfect time to introduce http://www.scottaaronson.com/writings/bignumbers.html …! (I really love this essay.)
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At a certain time, imagination & thoughts need an escape key. Otherwise you start counting and never stop.
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I know the biggest number, it's 4,294,967,295.
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surprised you haven't taught your kids about infinity yet!
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You should show them this (How to count past Infinity) https://www.youtube.com/watch?v=SrU9YDoXE88 …
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Teach him about space!
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Don't look in my wallet again!
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How to explain boolean of continuum? Like set of all possible functions on 2 dimensional space.
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Shoot for the highest goal possible
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too cute
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