How many Physical Science Basics books are there?

There are 2 books in the Physical Science Basics series by Louise Spilsbury, for ages 7-10.

Physical Science Basics Books in Order

2 books · Ages 7–10 · Chapter Books

Physical Science Basics is a 2-book series for ages 7–10 by Louise Spilsbury. Each book stands alone — start anywhere.

Start anywhere — each book stands alone.

That said, Crystals and Sources of Light are great first picks.

No particular order needed — browse and pick what catches your eye.