Dimensions of the figure Animation Play

Dividing into a given ratio Student activity Play

Dividing quantities in a given ratio Student activity Play

Dividing quantities in a given ratio Whiteboard exercise Play

Drag force Whiteboard exercise Play

Drawing a parallelogram Whiteboard exercise Play

Drawing a parallelogram and calculating its area Whiteboard exercise Play

Drawing a polygon Whiteboard exercise Play

Drawing a polygon Whiteboard exercise Play

Drawing pins Animation Play

Easy calculations Student activity Play

Eclipses Whiteboard presentation Play

Eclipses Class activity Play

Effect of concentration on the reaction rate. Rate equation Class activity Play

Effect of concentration on the reaction rate. Rate equation Whiteboard presentation Play

Eight 1-cm cubes Animation Play

Empirical formulae and molecular formulae of compounds Student activity Play

Energy, power and intensity of a wave Animation Play

Energy, power and intensity of a wave Student activity Play

Estimating areas Student activity Play

Example of approximation area by rectangles Animation Play

Examples of algebraic expressions Animation Play

Examples of populations and samples Animation Play

Examples of pressure calculations Simulation Play

Expectation (population mean) Student activity Play