Mystery Forces

A train floats in the air. A tree shrinks instead of growing. A spoon seems to move by itself. What’s going on? Students grapple with these “mysteries” as they read Mystery Forces. Students are provided with a mysterious scenario and are asked to figure out which force (gravity, electrostatic force, or magnetic force) is involved. They use descriptions of different pulls or pushes to determine which force is at work. Students think carefully about the effects that each force has in order to make an explanation and solve the mystery. The book also helps students connect what they’ve been learning about forces to the world outside the classroom.