Science B23: Making Work Easier


Award-winning video and lesson investigations for young children on the topic of controlling forces

Product Description

Video and lesson investigations on the topic of controlling forces. Key concepts include:

  • A plank and a block of wood can become a lever system which makes it easier to lift heavy objects.
  • Pulleys help with lifting things too.
  • Levers make lifting easier.
  • The length of the lever and the position of the turning point, or ‘pivot’ are important.
  • Pulleys convert downward ‘pull’ into upward ‘lift’.
  • Pulleys reduce the effort needed to lift a load.
  • Levers and pulleys belong to that class of items known as simple machines.
  • Simple machines are able to multiply a force and control the direction and strength of the force to make moving objects easier.
  • They are able to concentrate the moving force to where it is needed.


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