The equation of a circle with centre at an arbitrary point Simulation Play

The equation of a circle with centre at the origin Student activity Play

The equation of the circle Animation Play

The equation of the circle Student activity Play

The equation of the circle with centre at an arbitrary point Whiteboard exercise Play

The figures under enlargements Whiteboard exercise Play

The first tangent theorem Animation Play

The first tangent theorem – perpendicularity Student activity Play

The focal point of a concave mirror Simulation Play

The focal point of a concave mirror Student activity Play

The formation of an image by a spherical mirror Student activity Play

The formation of an image by a spherical mirror Simulation Play

The formation of an image by a spherical mirror Whiteboard exercise Play

The length of the arc Animation Play

The Milky Way Whiteboard exercise Play

The Milky Way Student activity Play

The Milky Way Illustration Play

The reasons for using circles Animation Play

The size of the image and the focal length of a mirror Student activity Play

The size of the image and the focal length of a mirror Simulation Play

The speed of the Moon Whiteboard exercise Play

The speed of the Moon Student activity Play

The tangent theorem – solving problems Whiteboard exercise Play

The triangles under enlargement Whiteboard exercise Play

Thermoregulatory system Animation Play