Coordinates of the vertices of the figures Animation Play

Coordinates – introduction Student activity Play

Correction for long-sightedness Animation Play

Correction for short-sightedness Animation Play

Creating symmetrical triangles Whiteboard exercise Play

Cubic function and other functions Simulation Play

Decoding a message Whiteboard exercise Play

Decoding a message Student activity Play

Definition of enlargement Student activity Play

Definition of trigonometric functions Student activity Play

Derivative of the function at a point Whiteboard exercise Play

Derivative of the function at a point Student activity Play

Deriving Cartesian equations of a locus Student activity Play

Describing the route of the ant Student activity Play

Describing the route of the ant Whiteboard exercise Play

Diagonals of the trapezium Student activity Play

Different types of point mutations Whiteboard exercise Play

Diffraction of waves and Huygens' principle Animation Play

Diffraction of waves and Huygens' Principle Student activity Play

Diminution Animation Play

Direct proportionality models Student activity Play

Direct proportionality models Whiteboard exercise Play

Distance between centres of two circles Whiteboard exercise Play

Distance between points in 3-dimensional space Whiteboard exercise Play

Distance covered by a point on the rim of the wheel Whiteboard exercise Play