Originally Posted by SiaSL
ColinsMum, was your son using Dreambox? That's what they show as a visual aide for this stage.
No, but it's a pretty obvious visual aid!

Does anyone else remember Dienes apparatus? When I was at school we did arithmetic in bases from 2 to 10, pretty much without favouring 10. We had sets of wooden equipment for each base - e.g. in base 7, little unit cubes, then longs that looked like 7 of them stuck together, flats that looked like 7 of those stuck together into a square shape, blocks that were, well, you guess, and in the lower bases long-blocks and flat-blocks. There was lots of "change a block for 7 flats" involved in the arithmetic. Great stuff, IMHO.

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