The normal Class activity Play

The notion of a half-plane Student activity Play

The notion of a half-plane Whiteboard exercise Play

The number line Whiteboard exercise Play

The number of car accidents Animation Play

The operation of a tokamak Animation Play

The origin of spectral lines Animation Play

The path of a charge moving in an electric field Animation Play

The perpendicular bisector Student activity Play

The perpendicular bisector of a line segment Animation Play

The perpendicular bisector of a line segment – a reminder Student activity Play

The points on a straight line Animation Play

The potential of an electric field due to a point charge Animation Play

The price of a ball-pen Whiteboard exercise Play

The price of petrol Whiteboard exercise Play

The reasons for the flow of induced current Animation Play

The red line Whiteboard exercise Play

The relationship between potential and the gravitational field strength Whiteboard exercise Play

The relationship between potential and the gravitational field strength Student activity Play

The rotation of a frame Animation Play

The rotation of the frame Student activity Play

The rotation of the frame Whiteboard exercise Play

The scalar product (1) Whiteboard presentation Play

The second tangent theorem Animation Play

The second tangent theorem – equality in length Student activity Play