Enthalpy and entropy changes Animation Play

Enthalpy change and calorimetry Whiteboard presentation Play

Enthalpy change and calorimetry Class activity Play

Enthalpy change does not depend on the reaction pathway Animation Play

Enthalpy changes Animation Play

Enthalpy changes Animation Play

Enthalpy of solution. Part 2 Student activity Play

Entropy and spontaneous changes Student activity Play

Entropy and spontaneous changes Whiteboard exercise Play

Entropy change in the surroundings Animation Play

Environmental variation of the arrowhead Animation Play

Equal segments Animation Play

Equality of tangent and cotangent Whiteboard exercise Play

Equation of motion Student activity Play

Equations involving the tangent function Whiteboard exercise Play

Equations involving the tangent function Student activity Play

Equations with tan(ax) Whiteboard exercise Play

Equations with  tan(ax) Student activity Play

Estimating the gradient Student activity Play

Estimating the gradient of a curve Whiteboard exercise Play

Events causing changes in the concentration of oxygen in the Earth's atmosphere Whiteboard exercise Play

Exact values of trigonometric ratios Animation Play

Exact values of trigonometric ratios for selected angles Animation Play

Exact values of trigonometric ratios for selected angles Student activity Play

Examples of functions represented in words – part 2 Student activity Play