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W e A re L earning T o

W e A re L earning T o. W e A re L earning T o. To use angles to measure bearings To calculate back bearings. Calculate bearings and back bearings Grade D. W hat I ’m L ooking F or. W hat I ’m L ooking F or. Success Criteria. Success Criteria. MUST be able to measure angles

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W e A re L earning T o

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  1. WeAre LearningTo WeAre LearningTo • To use angles to measure bearings • To calculate back bearings Calculate bearings and back bearings Grade D

  2. WhatI’m LookingFor WhatI’m LookingFor Success Criteria Success Criteria MUST be able to measure angles SHOULD understand the rules of bearings COULD understand how to calculate back bearings MUST SHOULD COULD 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  

  3. WhatI’m LookingFor WhatI’m LookingFor Success Criteria Success Criteria MUST be able to measure angles SHOULD understand the rules of bearings COULD understand how to calculate back bearings MUST SHOULD COULD 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

  4. Bearings N 75° P 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°. Bearings are always measured clockwise from North and are written as three figures.

  5. Compass points 000° N 045° 315° NW NE E 270° W 090° SW SE 225° 135° S 180°

  6. Measuring bearings

  7. WALT 20/09/2014 Grade D Calculate bearings and back bearings Grade D Bearings Essential Maths GCSE Exercise M18.2 p529 Questions 1, 3 Extension: Accurately draw and measure Q 4 and 5 WILF MUSTbe able to measure angles SHOULDunderstand the rules of bearings COULDunderstand how to calculate back bearings

  8. Back bearings N N 105º A B The bearing from point A to point B is 105º. What is the bearing from point B to point A? The angle from B to A is 105º + 180º = 285º This is called a back bearing. ? 105º 180°

  9. Investigating back bearings

  10. What have we been doing? Any hints and tips to offer?

  11. adjacent (side) angle: acute, obtuse, right, reflex base base angles, bearing, compass, degree (°) horizonal, point

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