Nine-year-old Hong travels the world with his paleontologist father, learning about different types of dinosaurs.

Nine-year-old Hong travels the world with his father, a paleontologist, and finds an ichthyosaur.

Nine-year-old Hong learns about the dinosaurs known as brachiosauruses as he helps his paleontologist father unearth a brachiosaurus fossil in the African country of Tanzania.

This book provides a simple introduction to soil describing the ingredients, the kinds, and the importance.

An introduction to fascinating facts and observations about rocks.

An introduction to gravity.