The field lines for two point charges Animation Play

The figures symmetric with respect to the marked point Whiteboard exercise Play

The first tangent theorem Animation Play

The first tangent theorem – perpendicularity Student activity Play

The first tangent theorem – perpendicularity Whiteboard exercise Play

The focal point of a concave mirror Simulation Play

The focal point of a concave mirror Animation Play

The focal point of a concave mirror Whiteboard exercise Play

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

The formula and the graph Student activity Play

The four quadrants and points of the unit circle Whiteboard exercise Play

The gradient and the equation of a tangent Student activity Play

The gradient of a curve at a point Whiteboard exercise Play

The gradient, the intercept and the graph Simulation Play

The graph of a function Student activity Play

The graph of a function Whiteboard exercise Play

The heat of vaporisation of water Animation Play

The information from the graph Animation Play

The intersection point of the two figures Animation Play

The Kelvin scale Student activity Play

The Kelvin scale Whiteboard exercise Play

The magnification of an image Whiteboard exercise Play