If your child is struggling with science, then this book is for you; the short book covers the topic and also contains science experiments to work with, and over 40 quiz questions.
This subject comes from the book "Second Grade Science (For Homeschool or Extra Practice)"; it more thoroughly covers more third grade topics to help your child get a better understanding of second grade math. If you purchased that book, or plan to purchase that book, do not purchase this, as the problems are the same.