The binomial theorem Whiteboard exercise Play

The binomial theorem – activity Student activity Play

The central angle of a regular polygon Student activity Play

The circle and the equilateral triangle Whiteboard exercise Play

The circle and the equilateral triangle Student activity Play

The circumcentre of a triangle Whiteboard exercise Play

The circumcentre of a triangle Student activity Play

The coefficients in the binomial expansion Animation Play

The concept of a set Student activity Play

The congruent triangle Simulation Play

The content of a problem as an algebraic expression Student activity Play

The content of a problem as an algebraic expression Animation Play

The converse of the Pythagorean theorem Whiteboard exercise Play

The converse of the Pythagorean theorem Student activity Play

The correctness of a construction Student activity Play

The correctness of a construction Animation Play

The cosine rule Whiteboard presentation Play

The cosine rule Class activity Play

The cosine rule Whiteboard exercise Play

The cosine rule Student activity Play

The cosine rule leading to two solutions Animation Play

The cosine rule – special case Animation Play

The counterexample Whiteboard exercise Play

The diagonal of a square Student activity Play

The distance between the points Animation Play