4 ms·
This method essentially converts the typical tabular calculations into a lattice, where the x-axis is the 10's coefficient. Cool way to think about it, but I d
by klochner 17y ago
This method essentially converts the typical tabular calculations into a lattice, where the x-axis is the 10's coefficient.
Cool way to think about it, but I doubt it would give any extra insight to someone learning how to multiply.
It also loses a lot of the "elegance" when you have to carry over sums > 10.
- Avshalom 17y agoMaybe not insight but it gives you an approach to multi-digit multiplication that you can use even if you're still sketchy on single digit. I know as a kid I'd occasionally resort to just adding a number up the appropriate number of times. and while that works for 67 * 5 it's super error prone for a 6 year old if that 5 is a 9 or worse a 30. This might (might) give 6 year old me an approach to that, sure it doesn't change the need to be able to count and do a little addition but it's a way to break the problem down that I sure wouldn't have thought of.
- bitwize 17y agoThat's like saying it gives you an approach to running that you can use even if you're still sketchy on walking. There's only one proven way to teach arithmetic, and that's drill and repetition of the basic number facts and the standard algorithms. It's worked for centuries.
- Avshalom 17y agoJust because somebody hasn't mastered step A yet doesn't mean they won't occasionally need/want step B.