Overall Good - some suggustions
Nice graphics and music.
May I suggest though, since this game is aimed at kids, the hints reflect the gameplay. I hit hint after doing a task, and the hint tells me to do what I just did lol. I kinda just wanted help moving through it faster - like big ole' yellow arrow saying go here, or click here - something, anything other than the task I was initially asked to complete. lol I know kids have attention problems, but I don't think it's THAT bad ;)
Also another suggestion would be to have hot keys for those buttons at the bottom of the screen, just so a kid could play slightly faster if they were capable.