5 ms·
I would avoid multiplication entirely and say that if you are combining tables, you need to update the bottom with the new number of total students. So somethin
by bradjohnson 6y ago
I would avoid multiplication entirely and say that if you are combining tables, you need to update the bottom with the new number of total students. So something like:
(T1 girls) + (T2 girls) 1 + 1
_______________________ = _____
(T1 total) + (T2 total) 3 + 3
I think that's more intuitive than averages, and would still work if the tables were of different sizes.
- wcarey 6y agoThis is definitely a good explanatory strategy (and one that I'd use). I might label the units of the right side as well. Would you attempt to explain the abstract rules of fraction arithmetic as an system?