Our family loves Penrose, the Mathematical Cat. Here, one story about numbers in base 2 inspired explorations of number bases in general. These snapshots show BatBoy using counters to translate numbers between base 10 and other bases, while SpiderGirl looks on and gives input as she is sewing.
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| 10100 in base 2 is 20 in base 10. |
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| Setting up to work in base 3. |
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