we are learning to to use angles to measure bearings to calculate back bearings calculate bearings...
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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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/1.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/2.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/3.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/4.jpg)
![Page 5: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/5.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/6.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/7.jpg)
Measuring bearings
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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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/9.jpg)
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](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/10.jpg)
Investigating back bearings
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![Page 12: We Are Learning To To use angles to measure bearings To calculate back bearings Calculate bearings and back bearings Grade D](https://reader030.vdocuments.mx/reader030/viewer/2022032802/56649e115503460f94afdd71/html5/thumbnails/12.jpg)
What have we been doing?
Any hints and tips to offer?
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adjacent (side)angle: acute, obtuse, right, reflexbasebase angles,bearing,compass, degree (°)horizonal, point