It's a shame that education focuses so much on the symbolic representation rather than the visual (at least here in Germany). My girlfriend is a teacher at a school that has digital whiteboards in every classroom. But according to her, the biggest advantage for her colleagues is that it needn't be cleaned manually.

I'd argue that even the pupils that have a problem with the symbolic representation would probably understand the visual concept. The next problem is to convert visual understanding into grades.

Ctrl + 1 - 4 in the demo loads the examples from the post.

Yes, and the little gear shows the cool part.

This is SO cool... I could watch these videos for hours. Do you know when you will release the others?

Submitted a few pull requests, hopefully they get accepted!

Definitely a very cool tool.

this is gem