Definition of an inscribed angle Animation Play

Definition of trigonometric functions Whiteboard exercise Play

Definition of trigonometric functions Student activity Play

Degree measure Student activity Play

Degree measure Whiteboard exercise Play

Degree measure Animation 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

Detection of the ammonium ion Student activity Play

Determining angles Whiteboard exercise Play

Determining angles Whiteboard exercise Play

Determining the molarity of the hydrochloric acid Whiteboard exercise Play

Determining the molarity of the hydrochloric acid – summary Animation 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 Whiteboard exercise Play

Diffraction of X-rays Student activity Play

Diffraction of X-rays Simulation Play

Diffuse reflection Simulation Play