Exploring the Building Blocks of Science Book K Activity Book is a fun way to introduce the youngest learners to the five core science subjects chemistry, biology, physics, geology, and astronomy. There are activities for coloring and drawing, doing outdoor activities, making observations, answering questions, and more. Concepts such as atoms and molecules, characteristics of living things, laws of motion, what Earth is made of, and the moon and planets are introduced in a basic form. The book is divided into sections by science subject.