I'll add that some people from HTDP went onto create Pyret as a new experiment in education: https://www.pyret.org/ https://www.pyret.org/ It's used in the Bo

I'll add that some people from HTDP went onto create Pyret as a new experiment in education: https://www.pyret.org/ https://www.pyret.org/ It's used in the Bootstrap program that teaches it to middle schoolers. Probably pretty easy to learn.