We’ve been creating great Tuxracer courses!! and will be uploading them to Tuxracer websites soon. If I do eventually get around to making my own website again I’ll probably put them there too. If you haven’t done it before it is easy and a great way for kids to learn. Good motivation for them too. We had a ball. I’ve taught my daughter and a small computing class too.
If you don’t have Tuxracer you can get it here. There’s information here for getting your 3d graphics card working properly under Linux. I used their instructions and info from Opengl.org too.
Another good website is Tuxracer Belly Rub this is probably where I’ll upload our courses.