System of equations Student activity Play

The alloy of gold and silver Animation Play

The amplifying characteristic of a transistor Whiteboard exercise Play

The amplifying characteristic of a transistor Student activity Play

The amplifying characteristic of a transistor Simulation Play

The basis of Darwin's theory of evolution Animation Play

The camera Student activity Play

The circumference and the astonishing number Pi Student activity Play

The cosine and coordinates of the points Animation Play

The cosine of an arbitrary angle Student activity Play

The cosine – reducing angles Student activity Play

The cosine – reducing angles Whiteboard exercise Play

The cream for the birthday cake Whiteboard exercise Play

The dimensions of the paper sizes Whiteboard exercise Play

The domain of the trigonometric functions Animation Play

The empirical formula of ethanoic acid Animation Play

The equality of two ratios Animation Play

The focal point of a concave mirror Simulation Play

The focal point of a concave mirror Student activity Play

The graph of direct proportionality Student activity Play

The graph of the cosine Student activity Play

The graph of the cosine Whiteboard exercise Play

The graph of the tangent Student activity Play

'The greatest achievement' of Archimedes Student activity Play

The greyhound and the hare Animation Play