I remember enjoying the "Uncle Albert" series of children's books on physics.

Rebecca Newberger Goldstein writes philosophical fiction. She is my favorite contemporary literary fiction author. Her biographies of Gödel and Spinoza are also brilliant.

The Lost Kafoozalum-- sf which has some utopian education that is a surprisingly good introduction to rationality. Stop and think, consider consequences, utilitarianism, there's no guarantee of success....