converting mixed #s and improper fractions

[marcia]

great exercise. could you also add a graphie component, maybe with rectchart or piechart?
i was looking at http://www.khanacademy.org/video/converting-mixed-numbers-to-improper-fractions?playlist=Developmental%20Math and http://www.khanacademy.org/video/changing-an-improper-fraction-to-a-mixed-number?playlist=Developmental%20Math for inspiration.

another thing is that the colors are slightly off, as you'll find in khan-exercise.css the real values of hint_green, hint_blue etc. for now until colorpicker is in place, can you just use those hex values instead of "green" in your TeX?

assigning to @osnr

[marcia]

looks like the second graphie's bounds are too small maybe? converting_mixed_numbers_and_improper_fractions.html?debug&problem=mixed-to-improper&seed=188654182

[marcia]

pinging @osnr

[marcia]

for converting from an improper fraction ( say, 83/27) to a mixed number, could you also add something under 83/27 = 3 R 2. something like (but not necessarily exactly) the improper fraction has 3 wholes in it, or 3 * 27/27 = 81/27. and somewhere also point out how 81/27 + 2/27 = 83/27? just to be explicit :)

[marcia]

sorry for email deluge! once that's added in, this one will be ready to go. :)