We're preparing to teach Pre-K at home this year, so I've designed this abacus/counter to help my child learn numbers. I had so much fun designing it, I didn't stop with 5-rows - I made one with 10 rows, for the really serious number crunchers, and one for counting in binary, base 6, and base 12, to help older children (an adults) learn about number bases, and for good nerdy fun.

#DIY #BackToSchool