[OmarShehata]

I love this! I'd for this to be a more typical experience in math class

(I bought Paul Lockhart's "measurements" but gave up because I felt like I needed a sandbox to play with and little hints. Like, I don't want to be told the answer but I want to know feedback exactly like this demo. Very simple: "this is not right" or "this is right, but can be done with fewer")

(My dream is to have a little game jam where we make interactive versions of these concepts as puzzle)