Tuesday, 6 December 2011

Weds – Using Scale Drawings and bearings to solve problems

LEARNING OBJECTIVE: To use scale drawings of real situations to solve problems

SUCCESS CRITERIA: You will be able to construct a scale drawing of a journey, including bearings and then using measuring equipment (Protractor and ruler) solve problems

STARTER: Here is an aerial view of Heathrow airport, what is the bearing of the runway shown? What is the runaway number if this runway is seen from the other end.

Repeat for runway at Gatwick

LESSON:

Question 1

A ship sets off from Bridlington on the east coast of Yorkshire and travels in a straight line on a bearing of 065° for 80 kms.

How far due north has it gone from Bridlington, How far East has it gone from Bridlington.

Show how to draw an accurate scale drawing of the situation and then use a ruler to solve it

QUESTION 2

A plane flies 250 kms on a bearing of 155° then flies a further 350kms on a bearing of 85°. Draw a scale drawing of this journey and then use a ruler and protractor to answer the following questions:

  1. How far is the direct journey from the start to the finishing point?
  2. What is the bearing of the direct journey
  3. What is the bearing of the direct journey from the finishing point back to the starting point

Work through Ex 12N on page 297 of Higher Text Book

PLENARY: Checking answers around the room, discussions as a class, feedback on confidence, exam question

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