Circumference of a circle Student activity Play

Circumference of a circle Animation Play

Coefficient of  x  squared Whiteboard exercise Play

Colours of indicators Student activity Play

Completely factorisation using the difference of squares Whiteboard exercise Play

Completing the perfect square Student activity Play

Completing the perfect square Whiteboard exercise Play

Completing the square Animation Play

Composed transformations of graphs using absolute values Student activity Play

Computing the square roots Whiteboard exercise Play

Conjugate acids and bases Whiteboard exercise Play

Conjugate acids and bases Student activity Play

Conjugate acid–base Animation Play

Conjugate acid–base pairs Animation Play

Consecutive powers Whiteboard exercise Play

Constructing a proof from a demonstration Student activity Play

Constructing a rectangle Student activity Play

Constructing a square Whiteboard exercise Play

Construction of a prism Simulation Play

Construction of a pyramid Simulation Play

Construction of a square Simulation Play

Construction of a square with given perimeter Simulation Play

Construction of triangles Animation Play

Covering the square with figures Simulation Play

Cubes Student activity Play