4.3 Scale Drawing

• Scale length
• Conversions in scale
• Linear scales
• Making scale drawings

• represent length to a given scale in different situations
• convert actual length to scale length in real-life situations
• convert scale length to actual length in real-life situations
• interpret linear scales in statement form in different situations
• write linear scales in statement form in different situations
• interpret linear scales in ratio form in different situations
• write linear scales in ratio form in different situations
• convert linear scales from statement form to ratio form and from ratio form to statement form
• make scale drawings in different situations
• apply scale drawing in real-life situations
• recognise the use of scale drawing in maps

“How do we determine scales in real life?”

“Where do we use scale drawing in real-life situations?”

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1. What a scale is
   40 min · 1 practice tasks · quiz
   Why big things are drawn small, and what has to stay the same for the drawing to be useful.
2. Representing a length to a scale
   40 min · 1 practice tasks · quiz
   Taking a measured length from the world and drawing the line that stands for it.
3. Actual length to scale length
   40 min · 1 practice tasks · quiz
   The dividing direction, practised on a range of scales including ones that need unit conversion.
4. Scale length to actual length
   40 min · 1 practice tasks · quiz
   The multiplying direction: measuring a drawing and working out the real size.
5. Linear scales in statement form
   40 min · 1 practice tasks · quiz
   Reading a scale written in words, and using it to answer questions in both directions.
6. Writing a scale in statement form
   40 min · 1 practice tasks · quiz
   Working out the scale of a drawing you did not make, by measuring it and dividing.
7. Linear scales in ratio form
   40 min · 1 practice tasks · quiz
   The other way of writing a scale, with no units at all, and how to read it.
8. Writing a scale in ratio form
   40 min · 1 practice tasks · quiz
   Turning a pair of measurements into a ratio by matching units and reducing to 1 : n.
9. Statement form to ratio form
   40 min · 1 practice tasks · quiz
   Converting a written scale into a ratio by turning the real length into centimetres.
10. Ratio form to statement form
    40 min · 1 practice tasks · quiz
    Converting a ratio back into words by reading the second number as centimetres.
11. Making a scale drawing
    40 min · 1 practice tasks · quiz
    Choosing a scale that fits the paper, converting every measurement, and drawing accurately.
12. A scale plan of a room
    40 min · 1 practice tasks · quiz
    Drawing a plan seen from above, including doors, windows and furniture, and what happens to areas.
13. Scale drawing in real life
    40 min · 1 practice tasks · quiz
    The trades that depend on scale drawings, the scales they use, and enlargement scales.
14. Scales on maps
    40 min · 1 practice tasks · quiz
    Measuring distances on a map, converting them, and using a printed scale bar.