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Direction and Angle

Direction and Angle. Positions and directions. Objectives. Add and subtract a pair of two-digit numbers Recognise positions and directions Use the eight compass directions N, S, E, W, NE, NW, SE,SW. Make and measure clockwise and anticlockwise turns.

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Direction and Angle

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  1. Direction and Angle Positions and directions

  2. Objectives • Add and subtract a pair of two-digit numbers • Recognise positions and directions • Use the eight compass directions N, S, E, W, NE, NW, SE,SW. • Make and measure clockwise and anticlockwise turns.

  3. Answer these questions on your whiteboards. • What is: 7 + 4 ?

  4. Answer these questions on your whiteboards. • What is: 17 + 4 ?

  5. Answer these questions on your whiteboards. • What is: 27 + 4 ?

  6. Answer these questions on your whiteboards. • What is: 27 + 14 ?

  7. Answer these questions on your whiteboards. • What is: 37 + 24 ?

  8. Answer these questions on your whiteboards. • What is: 15 - 7 ?

  9. Answer these questions on your whiteboards. • What is: 25 - 7 ?

  10. Answer these questions on your whiteboards. • What is: 65 - 7 ?

  11. Answer these questions on your whiteboards. • What is: 65 - 17 ?

  12. Answer these questions on your whiteboards. • What is: 75 - 27 ?

  13. Answer these questions on your whiteboards. • What is: 48 + 26 ? How did you work this one out? Lets look at some different strategies that you used.

  14. Now try these on your whiteboards, you have 2 minutes to work them out. 23 + 45 = 45 – 26 = 56 + 32 = 87 – 63 = 69 + 28 = 58 – 39 = 71 + 26 = 66 – 52 = Did any of these cause difficulty?

  15. Lets label the walls of the class N, S, E and W. • Stand facing north • Turn to face east, south and then west. • Did you turn clockwise or anticlockwise? Remember that a clockwise turn is to the right like the hands of a clock.

  16. Stand facing north again. • Make a quarter turn to face south. • Did you turn clockwise or anticlockwise? Remember that a quarter turn is a right-angled turn.

  17. Stand facing north again. Make a half turn clockwise. Which direction are you facing? Turn to face west. What sort of turn did you make? Face north and turn clockwise through half a right angle. Does anyone know which direction you are facing now?

  18. Halfway between north and east is called north-east. • What is half-way between north and west? • North-west • What is halfway between east and south? • South-east • What is halfway between south and west? • South-west

  19. Turn two anti-clockwise through two-right angles. • In which direction are you facing now?

  20. Who thinks that they could label this compass? Copy and complete the compass in your books. N NE NW W E SW SE S

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