Thanks a lot for the feedback. This definitely is not meant to replace or more appropriately serve learners than the methods you mentioned. Like I said it would be at most an addition to more established studying approaches, and in many cases (for mature men) just a fun thing to do/have. Cheers
Children will be better off using interactive teaching aids on a computer.
Adults are more appropriately served with the same, or a decent textbook on the subject.
Why would anyone want to print this out and colour it? I suppose it might appeal to immature manchildren, but hopefully that is a smallish market.