1. Year 8: Bearings Dr J Frost (jfrost@tiffin.kingston.sch.uk) www.drfrostmaths.com Last modified: 8 th October 2015

2. Starter Puzzle Here some aerial pictures of various airport runways Dr Frost has been on. Can you work out what the numbers mean?  Heathrow - LondonJFK – New York Hilo Airport - Hawaii EuroAirport – Basel- Mulhouse-Freiberg Portland International Airport - Oregon Beijing Capital International Airport Rhodes Airport - Greece If we add a 0 on the end, we get the angle clockwise from North the runway faces!

3. Bearings  A bearing is an angle measure clockwise from North. We use 3 digits. Historical reason for 3 digits? Bearings used to be transmitted digit by digit from ship to ship. Were some bearings two digits, it would be ambiguous whether two digits was intended or a digit was lost in transmission. ?     A B C D E B from A000 A from B180 C from A090 D from A225 A from D045 A from E135 E from A315 The bearing of: ? ? ? ? ? ? ?

4. Measuring Bearings N N Click to Bromeasure > 056 What do you notice about the two bearings? 180 + 56 = 236 Click to Bromeasure > ?

5. Test Your Understanding B from A116 A from B296 C from B073 D from C228 A from D334 D from A154 Question on provided sheet. ? ? ? ? ? ?

6. Tiffin John Lewis Scale 1:300 It means that 1cm on the map represents 300cm in real life. 75cm  What does this scale mean? You have a map of Kingston-upon-Thames… ? What distance is this in real life? ?

7. Test Your Understanding 1 2 3 ? ? ?

8. Worksheet Have go at the provided printouts.