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Schemes of Work
QCA

Science at key stage 3    (Year 7)

Unit 7K: Forces and their effects
Section 10: c. What does friction do?

QCA

Objectives

Children should learn:
  • that frictional forces can be useful
  • to identify the main points of a talk

Activities

Outcomes

Children:
  • Present pupils with a set of cards with a series of statements, eg friction always slows things down, shoelaces stay tied because of friction, friction is useful to gymnasts, matches light because of friction, cars need friction to keep moving, and ask pupils to say if they are true/partly true/false. Discuss answers with the pupils and draw out the idea that friction is often helpful. Emphasise the importance of friction in walking and for wheeled vehicles, eg by showing a video clip of cars, people on ice or of vehicles stuck in sand. Show pupils pictures/examples of the treads on tyres and ask them to suggest how they work, or ask them to write a story of imagination, 'A world without friction'. Ask pupils to produce an information card, eg 'Ten things you never knew about friction'.
  • describe examples where frictional forces are helpful
  • explain why friction is important in the movement of vehicles
  • present information about friction clearly and concisely

Points to note

  • The phrase 'the real McCoy' is thought to have originated from lubrication systems for locomotives, invented by the American Elijah McCoy, son of a runaway slave.
  • Extension: pupils could be asked to find out about safety regulations for car tyres and why these are important.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. Where do we come across forces?
2. a. Why do things float?
3. b. Why do things float?
4. c. Why do things float?
5. How do different materials stretch?
6. Checking progress
7. What is weight?
8. a. What does friction do?
9. b. What does friction do?
10. c. What does friction do?
11. What affects how quickly a car stops?
12. Reviewing work