Great work! I really enjoyed the interactivity. Actually I already was aware of the concept of zero-knowledge proof from the wonderful article by ZCash(which is a privacy-oriented cryptocurrency) core developer Matthew Green, worth to check it out: https://blog.cryptographyengineering.com/2014/11/27/zero-kno...

My two cents of the ZKP illustration is that directly using hashes are more likely to convince "computer-friendly" people to introduce the commitment scheme.