Portal problem

[Schinken95]

I have a problem with three of the portal achievements. The three achievements are "Rocket Science","Basic Science" and "Aperture Science". I don´t know how, but i don´t get the achievements although i pass all the tests. Everyone of the levels are are checked but i dont get the achievements. Do anyone know a solution for this problem?

regards ♥♥♥♥♥♥♥♥