Very challenging and educational.
I still wonder why there wasn't a medal made for collecting a trophy in "Diving is fun".
Much better than the first one. I think the soundtrack could have been changed, and you might have been able to add different color themes as unlockables. Most importantly this is still lacking a random level generator, which could make this a lot more interesting.
9/10 because you've made major improvements, -1 because it's still not perfect.
Math is fun!!!!!
Level four is screwed up