Remember when I said I was going to do Duolingo Math?
Well, I have a bunch of screenshots I haven't posted, so here we go.
It started me off on fractions. Fairly standard representations that schools use.
Sometimes you answer by dragging a slidey bar. This one has set points you can drag to.
There were also basic calculations
On that second one, you can drag the slider to any place on the bar, not just set numbers, so there's some estimation of length/proportion involved. So far I haven't encountered an answer that wasn't either halfway, one quarter, three quarters, or at the end.













