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Bearings and scale drawings

Bearings and scale drawings for A Level Spanish OCR: what it means, how to set the working out, and the questions it is asked in.
  • A Level
  • OCR
  • Spanish
  • Spec G8 · G6
  • 9 min read
  • 6 revision boxes

Introduction

2 boxes
4 min read

What is bearings and scale drawings?

Listen to this box

Transcript

A short spoken summary of bearings and scale drawings and where it is used.

A spoken walk-through of bearings and scale drawings before you read the notes.
Read the units in the question before you start; a converted unit is the most common slip.
5 rows

The bearings and scale drawings reference table

The specification wording is precise here, and the mark scheme follows that wording exactly.
Worth knowing: a2+b2=c2a^2 + b^2 = c^2.
Term
Meaning
Example
Row 1 column 1
Row 1 column 2
a2+b2=c2a^2 + b^2 = c^2
Row 2 column 1
Row 2 column 2
49=7\sqrt{49} = 7

Learning

2 boxes
5 steps

How to work with bearings and scale drawings

Work through the method one line at a time and write down what changes at each step.
The layout below is the one the mark scheme expects.

Diagram showing bearings and scale drawings laid out step by step

The same idea drawn out, so the method is visible.
Worth knowing: 49=7\sqrt{49} = 7.
  1. Read the question and write down what is being asked for.
  2. Set out the working for bearings and scale drawings in the order the method gives.
  3. Substitute the values and simplify.
  4. Check the answer against an estimate before writing it down.
Start from the definition and substitute the numbers the question gives you.
Simplify one line at a time: 34×25\frac{3}{4} \times \frac{2}{5}.
Answer: ≈160\approx 160
2 rules

Key facts: Bearings and scale drawings

Check the answer against an estimate before you move on, so a place-value slip is caught here.

  • Rule 1

    How bearings and scale drawings behaves in the 1st of the cases the specification names.
    x2+5x+6=0x^2 + 5x + 6 = 0

  • Rule 2

    How bearings and scale drawings behaves in the 2nd of the cases the specification names.
    x2+5x+6=0x^2 + 5x + 6 = 0

  • Rule 3

    How bearings and scale drawings behaves in the 3rd of the cases the specification names.
    49=7\sqrt{49} = 7

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Examples

2 boxes
2 marks · worked

Worked example: bearings and scale drawings

Check the answer against an estimate before you move on, so a place-value slip is caught here.
The layout below is the one the mark scheme expects.

Diagram showing bearings and scale drawings laid out step by step

The same idea drawn out, so the method is visible.
Worth knowing: 49=7\sqrt{49} = 7.
3 marks · worked

Practice question 6: 34×25\frac{3}{4} \times \frac{2}{5}

This idea appears again in the higher-mark questions, so it is worth over-learning.
The layout below is the one the mark scheme expects.

Diagram showing bearings and scale drawings laid out step by step

The same idea drawn out, so the method is visible.
Worth knowing: ≈160\approx 160.

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Common questions

How many marks is bearings and scale drawings usually worth?
Between one and four, depending on how many steps the question asks for.
Is this on the A Level Spanish OCR paper?
Yes — it sits in the Spoken language strand.