Triangles – part III Student activity Play

Trigonometric functions of the sum and difference of angles (1) Whiteboard presentation Play

Trigonometric functions of the sum and difference of angles (1) Class activity Play

Trigonometric functions of the sum and difference of angles (2) Class activity Play

Trigonometric functions of the sum and difference of angles (2) Whiteboard presentation Play

Two billiard balls collisions and the velocity vectors Whiteboard exercise Play

Two-part calculations Student activity Play

Two-part calculations Whiteboard exercise Play

Using the basic operations on integral exponents Animation Play

Using the sum and difference identities for the sine and cosine Whiteboard exercise Play

Using the trapezium rule Whiteboard exercise Play

Value of the sum of the polynomials Simulation Play

Value of the sum of the polynomials Simulation Play

Vector addition Student activity Play

Vector addition Whiteboard exercise Play

Vector subtraction Student activity Play

Vertical and supplementary angles in a triangle Simulation Play

Vertical angles – revision Student activity Play

Visualisation of squaring a binomial sum Animation Play

Walking ostrich Whiteboard exercise Play

What is a perimeter? Animation Play

What is a perimeter? Student activity Play

What is the missing number? Student activity Play

Why are they sums? Animation Play

Work and the time necessary to perform it – part 1 Student activity Play