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We Are Learni ng To We Are Learni ng To • To use angles to measure bearings • To calculate back bearings Calculate bearings and back bearings Grade D

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Page 1: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

WeAre LearningTo

WeAre LearningTo

• To use angles to measure bearings

• To calculate back bearings

Calculate bearings and back bearingsGrade D

Page 2: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Success Criteria

WhatI’m LookingFor

Success Criteria

COULD

SHOULD

MUSTMUST be able to measure angles

SHOULD understand the rules of bearings

COULD understand how to calculate back bearings

WhatI’m LookingFor

SELF MANAGERS –

how can you keep your focus?

what information do you know already?

how are you trying to achieve your goal?

CREATIVE THINKERS –

everything is possible

Page 3: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Success Criteria

WhatI’m LookingFor

Success Criteria

COULD

SHOULD

MUSTMUST be able to measure angles

SHOULD understand the rules of bearings

COULD understand how to calculate back bearings

WhatI’m LookingFor

SELF MANAGERS –

how can you keep your focus?

what information do you know already?

how are you trying to achieve your goal?

CREATIVE THINKERS –

everything is possible

Page 4: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D
Page 5: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Bearings

Bearings are a measure of direction taken from North.

If you were travelling North you would be travelling on a bearing of 000°.

If you were travelling from the point P in the direction shown by the arrow then you would be travelling on a bearing of 000°.

If you were travelling from the point P in the direction shown by the arrow then you would be travelling on a bearing of 075°.

N

75°

P

Bearings are always measured clockwise from North and are written as three figures.

Page 6: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Compass points

N

EW

S

NE

SESW

NW

000°

045°

090°

135°

180°

225°

270°

315°

Page 7: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Measuring bearings

Page 8: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

19/04/23 Grade DWALT

WILF

MUST be able to measure angles

SHOULD understand the rules of bearings

COULD understand how to calculate back bearings

Calculate bearings and back bearingsGrade D Bearings

Essential Maths GCSE

Exercise M18.2 p529 Questions 1, 3 Extension: Accurately draw and

measure Q 4 and 5

Page 9: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Back bearings

The bearing from point A to point B is 105º.What is the bearing from point B to point A?

A

N

105º

B

N

?

The angle from B to A is

105º + 180º = 285º

This is called a back bearing.105º

180°

Page 10: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

Investigating back bearings

Page 11: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D
Page 12: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

What have we been doing?

Any hints and tips to offer?

Page 13: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D

adjacent (side)angle: acute, obtuse, right, reflexbasebase angles,bearing,compass, degree (°)horizonal, point


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