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Bearings
L.I. To use compass bearings to
        describe position.
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
Matching compass points…
                     000°
              338°            023°

       315°                          045°

  293°                                  068°


270°                                        090°

  248°                                  113°


       225°                          135°
              203°          158°
                     180°
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
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
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
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°
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
Now it’s your turn.




http://www.ngfl-cymru.org.uk/vtc/ngfl/maths/echalk/bearings/
• 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.

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Bearings lesson

  • 1. Bearings L.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.