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Bearings lesson
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Bearings lesson

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Transcript

  • 1. BearingsL.I. To use compass bearings to describe position.
  • 2. Bearings…• Tell us in what direction something is• Are more accurate than using compass points• Are always three figures• Always measure the angle clockwise from North
  • 3. Matching compass points… 000° 338° 023° 315° 045° 293° 068°270° 090° 248° 113° 225° 135° 203° 158° 180°
  • 4. Measuring bearings…Find the bearing of B from A. • Mark the North line on at A (if there isn’t a North line draw one in) • Draw the line connecting A x A to B. • Measure the angle x clockwise from the North line B to B
  • 5. Measuring bearings…Find the bearing of B from A. • Place your protractor over the north line with 0° at the top. • Give the answer as a three- A figure bearing The bearing of B from A is 135°. B
  • 6. Measuring bearings…Find the bearing of A from B. • Mark the North line on at B (if there isn’t a North line draw one in) • Draw the line connecting B x A to A. • Measure the angle x clockwise from the North line B to A
  • 7. Measuring bearings…Find the bearing of A from B. • Place your protractor over the north line with 0° at the x A bottom. • Because you are measuring x clockwise you need to B measure the exterior angle. • The angle has gone past 180° so you will need to add your measurement to 180°
  • 8. Measuring bearings…Find the bearing of A from B.135 ° • The measurement from the bottom 0° is 135°. x A • 135° + 180° = 315°. x The bearing of A from B is 315°. B
  • 9. Now it’s your turn.http://www.ngfl-cymru.org.uk/vtc/ngfl/maths/echalk/bearings/
  • 10. • Clay, Izzy, Wiremu, Liam work on computers with Whaea Talia.• Tanya, Xuan, Dacmen, Ella come to the mat with me.• The rest of the class work on the worksheet handed around. Do Task 23. When you get to number 10 come and get a school map from the front.