The central angle of a regular polygon Student activity Play

The central angle of a regular polygon Whiteboard exercise Play

The correct sums Whiteboard exercise Play

The cosine of an arbitrary angle Simulation Play

The cosine of an arbitrary angle Student activity Play

The cosine rule Whiteboard exercise Play

The cosine rule Class activity Play

The cosine rule Student activity Play

The cosine rule Whiteboard presentation Play

The cosine rule – special case Animation Play

The cosine – reducing angles Whiteboard exercise Play

The cosine – reducing angles Student activity Play

The cotangent function Whiteboard exercise Play

The counterexample Whiteboard exercise Play

The critical angle Whiteboard exercise Play

The critical angle Whiteboard exercise Play

The definite integral of the sum or difference of two functions Whiteboard exercise Play

The definite integral of the sum or difference of two functions Student activity Play

The derivation of Snell's Law Animation Play

The derivative of a sum of functions Whiteboard exercise Play

The derivative of a sum of functions Student activity Play

The derivative of the sum and difference of functions Student activity Play

The derivative of the sum and difference of functions Whiteboard exercise Play

The domain of the trigonometric functions Animation Play

The enlargement of the triangle Animation Play