By Glen Phelan
Motion: A World on the Move uses real-world experiences to explain how position, speed, and velocity relate to motion. Students learn that position is the location of an object relative to a point of reference. They find out how to use a simple formula to calculate how far a moving object travels and the average speed at which it travels. Students learn that velocity and speed are not the same thing and that an object’s velocity changes only if a force acts on the object. At the end of each two-page spread, a brief statement called The Bottom Line reinforces students’ understanding by summing up the key ideas about motion covered in those pages.
Lexile: 800L
ISBN: 978-1-933798-68-4
