A black box Student activity Play

A diagram of the operation of a gas turbine engine Animation Play

A diode and an alternating current Student activity Play

A diode and an alternating current Whiteboard exercise Play

A film played backwards Animation Play

A semiconductor diode Student activity Play

A semiconductor diode Animation Play

A semiconductor diode Whiteboard exercise Play

Amphoteric metal hydroxides Animation Play

Antiperistalsis Slideshow Play

Are only exothermic processes spontaneous? Animation Play

Binoculars Student activity Play

Biological treatment of wastewater Student activity Play

Blood as a life-saving medicine Slideshow Play

Calculator methods Whiteboard presentation Play

Calculator methods Class activity Play

Common factor Student activity Play

Conjugate acids and bases Student activity Play

Different questions about the same operation Whiteboard exercise Play

Different questions about the same operation. How much more? How much less? Student activity Play

Diode testing Simulation Play

Diode testing Whiteboard exercise Play

Diode testing Student activity Play

Diode testing Animation Play

Divisibility by 7 Student activity Play