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I saw this thing on r/math that might interest you: https://www.reddit.com/r/math/comments/fnjav6/i_created_an_app_for_practicing_algebra_with/ https://www.redd

• jackcosgrove 6y ago
  Very cool! That is what the videos were like.
• tgv 6y ago
  That's pretty neat. I'll have to try it. The thread mentioned an alternative, https://graspablemath.com/ https://graspablemath.com/, which looks similar (note: only judging from the video), which you can immediately try in the browser, but that felt a bit clumsy to me. YMMV.