Science
Forces & Motion
Conceptual
9–10 yrs
Levers, Pulleys & Gears
杠杆、滑轮与齿轮
Description
Recognise that some mechanisms including levers, pulleys, and gears allow a smaller force to have a greater effect
Mastery Evidence
- Describe how a lever works: effort at one end moves a load at the other, with a pivot in between
- Explain how a pulley changes the direction of a force and can make lifting easier
- Describe how gears transfer and change the size or direction of forces
Assessment Prompt
Can your child explain how a see-saw, a pulley on a flagpole, or the gears on a bicycle make it easier to move heavy things with less effort?
