In case you want to "taste" 3D characters at your own computer, definitely try StoryFactory, which is very friendly even for beginners with 3D characters.

In case you want to see 3D characters in action at you school, contact us. We can organize a lecture at your school.

If you want to try serious games, try to persuade your teacher to use Europe 2045 ;-)

You can also see us at various actions for public audience organized by Faculty of Mathematics and Physics of Charles University in Prague, check Facebook or Calendarium or Monday's lectures for public.