Teaching article

A dinosaur size drawing should show its scale and estimate

Read a verified measurement and apply a stated drawing scale.

Read the source measurement, including any qualification, before choosing a drawing scale. A clearly labelled model can communicate the estimate without pretending it is an exact measurement of every member of a species.

Keep the source's estimate and the chosen scale beside the drawing. The resulting model should not imply more precision than the original information.

Carry the source's uncertainty into the model

  1. Read the stated estimate.
  2. Choose a simple scale.
  3. Label the diagram.

At one square per metre, a six-metre example spans six squares.

Published estimates can vary.

What does one square represent? Use pre-drawn grid lengths.

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