Step 5 Objective
Use a ruler and protractor to measure and draw lines to the nearest millimetre and angles, including reflex angles, to the nearest degree.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
Pupils may benefit from using acetates of protractors with the numbers removed. Ask pupils to measure given angles, using just the markings on the acetates. Then look at a conventional protractor and explore measuring in a positive direction and a negative direction, noting the use of the degree scales. Emphasise the importance of estimating before measuring.
Present as a challenge the task of drawing reflex angles, using a 180° protractor. Discuss pupils' strategies.
- ITP fixpoints_10 - Zip file (564Kb) (useful for constructing shapes and measuring angles).