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Work Based BA PTE Year 2 Science in the Primary Years

Work Based BA PTE Year 2 Science in the Primary Years. Unit 5 Session 1 Forces 1. Learning objective: To deepen personal understanding about the nature of forces. National Curriculum See unit notes. Brainstorm: What do you understand by the word ‘force’?. What might children say?.

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Work Based BA PTE Year 2 Science in the Primary Years

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  1. Work Based BAPTE Year 2 Science in the Primary Years Unit 5 Session 1 Forces 1

  2. Learning objective: • To deepen personal understanding about the nature of forces National Curriculum See unit notes

  3. Brainstorm: What do you understand by the word ‘force’?

  4. What might children say?

  5. A force is: • a push • or • a pull

  6. Question! How can a large cardboard box and a small student assist in the teaching of forces?

  7. What forces are acting on the student?

  8. Why does she not move down through the floor if gravity is pulling herdown? gravity

  9. Contact force Gravity

  10. Contact force Push! Gravity

  11. Contact force Push! Friction Gravity

  12. Some key ideas A force is measured in: ons s Newtons!

  13. Forces have effects in different directions

  14. Forces can be added

  15. Forces can balance Contact force Push Push gravity

  16. A force is a vector • It has: • size • and • direction

  17. Spend 5 minutes on each of the 2 activities • on the handout: • 1. Feeling and measuring forces (in pairs) • 2. Heave Ho! Adding forces together (in a group of 6ish)

  18. Contact forces and non-contact forces • Read Summary of Scientific Ideas on Forces Unit notes pp 3-11 There are only a few different types of forces: • gravitational • electric • magnetic (related to electric) • strong nuclear • weak nuclear

  19. Every movement that starts or stops requires a force. Three common forces are: • gravity (weight) • contact force (reaction force) • friction

  20. Circus of 4 activities – see handouts • Contact Force 1 • Contact Force 2 • Friction 1 • The cause of friction

  21. Summary of key points Contact force Forces can balance Weight (gravity)

  22. What does this show?

  23. The contact force with a surface is caused by springy atoms

  24. Friction push friction

  25. What causes friction? A rather sad comb! Resistance due to distortion of bristles

  26. Analogous to two surfaces in contact

  27. Why don’t the Australians drop off?

  28. What causes gravity?

  29. ‘The core is like a big magnet.’ ‘Is it because the world is spinning?’

  30. Mass attracts mass

  31. Sorry…no excuse

  32. ‘Pencils produce gravity but not enough to attract anything.’ ‘If you push the two books out in a space craft, in a few days they would gradually pull together…where there’s no friction.’ ‘It’s a force that pulls things to the centre of the earth.’ ‘It makes things fall’ ‘It causes the tide to come in.’ ‘I think it’s a force that grows in outer space and it picks up rubble and pulls it together.’

  33. Concept cartoon 11.6 Discuss skateboard example

  34. Homework Required Reading: • Johnsey et al. (2002) Chapter 9 • Sharp et al. (2002) pp.91-92 Also: Explore/read the Handout – plenty of useful information!

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