Earlier quoted context omitted.
> No learning linear systems without learning how to do linear approximation of systems in a mostly non-linear world. That's why Common Core trains kids on estimation from Grade 2. Instead of adding 12 + 23 = 35, you add 10 + 20 = 30 to get a number close to the right answer. This plants the idea "I can simplified numbers to get the answer if I don't need the last digit, which lets me solve problems faster". Which ge…
Nod. A random TIL from Friday, courtesy to qwen.ai: In contrast to USA educational estimation, which emphasizes point estimates, China reportedly emphasizes directional estimation to establish an envelope, upper and lower (strict) bounds - Da Gu and Xiao Gu. I've long though we'd be better off doing incremental bounding, hard and soft, in part because the group discourse dynamics are so much better. "Ok, who can sugg…
A little more effort than VC-funded work, but there are fewer strings attached.