Solving word problems Whiteboard presentation Play

Solving word problems Class activity Play

Some common naturally occurring isotopes Chart Play

Stoichiometric coefficients and the relative volumes of gases Whiteboard exercise Play

Stoichiometric coefficients and the relative volumes of gases Student activity Play

Structure determination by chemical methods: an example Animation Play

Subjective probability Student activity Play

Subtracting common fractions and decimals Student activity Play

Subtracting common fractions and decimals – the result as a decimal Whiteboard exercise Play

Subtracting common fractions and decimals – the result as a fraction Whiteboard exercise Play

Sum of the consecutive terms of a geometric progression Student activity Play

Sum of the consecutive terms of a geometric progression Whiteboard exercise Play

Sum of the consecutive terms of a geometric progression Whiteboard exercise Play

Surface of a cone Student activity Play

System of equations Student activity Play

Taking a common factor out of the brackets Whiteboard exercise Play

Taking a common factor out of the brackets – 1 Student activity Play

Taking a common factor out of the brackets – 2 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 circumference and the astonishing number Pi Student activity Play

The common points of the disc and the axes Animation Play