Toys and Forces Forces make toys work Forces make toys start moving change direction speed up slow down and stop Forces also change the shape of some toys Bouncing toys Floating toys Flying toys Rolling toys Sliding toys Spinning toys None of these toys would work without forces 4
What Is a Force A force is a push or a pull When you push something it moves away from you When you pull something it moves towards you When this girl applies a pushing force to the cart it moves away from her When this boy applies a pulling force to the cart it moves towards him 5
How Does a Rolling Toy Work A rolling toy works when a pushing or pulling force makes it move When the force pushes or pulls the toy the toy’s wheels turn When the wheels turn the toy rolls A pushing force makes these toys move causing their wheels to turn 6
7 A rolling toy can roll because it has special moving parts Wheels and axles are the moving parts that allow a rolling toy to roll wheels axles hold the wheels in place Wheels and axles make rolling toys roll easily across the ground
