I love the splash page design. It's definitely best to add a write-up of your bios on the bio page besides the Youtube video. Any source of Media who want to mention your work can have something to refer to or something they can copy/paste about you in their promotions.
The interactive game looks great. Maybe it should break into levels and be a bit for challenging so kids can gain more of a sense of accomplishment. Most kids site are flash-based because it's flashy, animated, and interactive...so look into that down the road. So far it looks promising.