Forces and motion
Pushes and pulls, simple machines, magnets and building strong structures.
Lessons
Pushes, Pulls and Magnets
Why a rolling ball always stops, whether a magnet can pull through a table, and how far a paper clip will jump. Three lessons on the pushes and pulls that start, stop and steer things.
Forces and Motion: Crash, Push and Stop
Why you lurch forward when the bus brakes, how fast a toy car really goes, why heavier carts hit harder, and how to build a crumple zone that saves an egg. Four lessons on inertia, speed, mass and stopping safely.
Forces at Work: Gravity, Resistance, Levers and Pulleys
Do heavy things really fall faster? Why are fast swimmers shaped like torpedoes? How can a small push lift a big load? Three hands-on lessons on gravity, air and water resistance, friction, levers and pulleys, measured in newtons with homemade and simple tools.
Online practice
- What makes things move Kindergarten
- Push and pull Kindergarten
- Sort pushes and pulls Kindergarten
- Stronger and weaker pushes Kindergarten
- Faster and slower Kindergarten
- Stop a rolling ball Kindergarten
- Magnets push or pull Kindergarten
- Direction of a push Kindergarten
- Which things a magnet pulls Kindergarten
- Change of position Kindergarten
- How far it rolled Kindergarten
- Where is it now Kindergarten
- Ramp height and distance Kindergarten
- Order of a ball's motion Kindergarten
- Count the pushes Kindergarten
- Motion from pushing Grade 1
- Friction slows motion Grade 2
- Push strength Grade 2
- Magnets and motion Grade 2
- Read a motion table Grade 2
- Pull and move up Grade 2
- Slow it down Grade 2
- Magnet strength Grade 2
- Magnets and how they pull Grade 3