I'm working on something somewhat similar, here's an example lesson: https://treena.org/#lesson/vector-subtraction https://treena.org/#lesson/vector-subtraction

I'm working on something somewhat similar, here's an example lesson: https://treena.org/#lesson/vector-subtraction https://treena.org/#lesson/vector-subtraction There are more on the home page. It's not so mobile friendly yet. But the approach I'm taking is quite different :) Great work Mathigon!