How to estimate the cost of electrical energy Student activity Play

Noise pollution Student activity Play

Perpetual motion machine Whiteboard exercise Play

Perpetual motion machine Student activity Play

Perpetual motion machine of the first and second kinds Animation Play

Removal of dirt Animation Play

Soaps and detergents Student activity Play

Sources of noise Slideshow Play

The factor machine Whiteboard exercise Play

The lever as a simple machine Slideshow Play

The remainder machine Student activity Play

The remainder machine Whiteboard exercise Play

The Second Law of Thermodynamics Whiteboard presentation Play

The Second Law of Thermodynamics Class activity Play

Transformation machine Animation Play

Two-part calculations Student activity Play

Using tree diagrams Student activity Play

Washing powder: Snow White Whiteboard exercise Play

Washing powder: Snow White Whiteboard exercise Play