Students learn how to recognise and prove various circle theorems including: angle at the centre is double the angle at the circumference, angles in the same segment are equal, opposite angles in cyclic quadrilaterals add to 180°, a tangent runs perpendicular to the radius and opposite angles in alternate segments are equal. This unit takes place in Term 6 of Year 10 and follows on from Angle Geometry.
How to introduce the sin, cos and tan trigonometric identities.
How to teach calculating the original amount after a percentage change.
The importance of the range when comparing comparing datasets.