This Baby Professor book explains the laws of motion in terms that are appropriate for fourth graders. Energy, and its forms, as well as motion will be sufficie

There are simple machines all around you. Some may look exactly what they are while others have been built to be a little more complex. In this book, you will l

There are simple machines all around you. Some may look exactly what they are while others have been built to be a little more complex. In this book, you will l

Can you measure matter? Apparently, you can; and this book will show you how. Learn to measure matter using dimensions, weight, and volume. Classify objects bas

Motion and force have a very intricate relationship that’s why they are often studied together. In this book, you will learn about the effects of motion and f