Curvilinear motion Class activity Play

Cyclic quadrilaterals Student activity Play

Cyclic trapeziums Whiteboard exercise Play

Cycloalkanes Student activity Play

Davisson-Germer experiment Simulation Play

Definition of a central angle Animation Play

Definition of an inscribed angle Animation Play

Definition of trigonometric functions Whiteboard exercise Play

Definition of trigonometric functions Student activity Play

Degree measure Animation Play

Degree measure Student activity Play

Degree measure Whiteboard exercise Play

Degrees – activity Whiteboard exercise Play

Degrees, minutes and seconds Whiteboard exercise Play

Demonstration or proof? Animation Play

Demonstration or proof? Student activity Play

Derivation of the formula Animation Play

Determining angles Whiteboard exercise Play

Determining angles Whiteboard exercise Play

Determining the sign of the tangent Whiteboard exercise Play

Determining the signs of trigonometric functions Student activity Play

Different angles Student activity Play

Diffraction of electrons Whiteboard exercise Play

Diffraction of electrons – the Davisson-Germer experiment Student activity Play

Diffraction of X-rays Simulation Play