The lines of symmetry Whiteboard exercise Play

The mass spectrum of chlorine gas Whiteboard exercise Play

The NMR spectrometer Student activity Play

The NMR spectrometer Whiteboard exercise Play

The normal Class activity Play

The normal Whiteboard presentation 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 origin of spectral lines 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 price of a ball-pen Whiteboard exercise Play

The price of petrol Whiteboard exercise Play

The properties and function of chlorophyll Student activity Play

The range of the visible light spectrum Whiteboard exercise Play

The red line Whiteboard exercise Play

The result of colour addition Whiteboard exercise Play

The scalar product (1) Whiteboard presentation Play

The second tangent theorem Animation Play

The second tangent theorem – equality in length Whiteboard exercise Play

The second tangent theorem – equality in length Student activity Play