A closer look at the sine Whiteboard exercise Play

A closer look at the trigonometric ratios Student activity Play

A multiplication sign in a algebraic expression Animation Play

A right-angled triangle Student activity Play

A right-angled triangle – opposite side Whiteboard exercise Play

A simpler way to write algebraic expressions Student activity Play

AA property of similar triangles Student activity Play

An application of the vocabulary of probability Whiteboard presentation Play

An application of the vocabulary of probability Class activity Play

Antiparticles Animation Play

Antiparticles – matter and antimatter Student activity Play

Area between the graphs of two functions of different sign Whiteboard exercise Play

Area between the graphs of two functions of different sign Student activity Play

Balloon seller Animation Play

Brackets and the negative sign Whiteboard exercise Play

Brackets and the negative sign Student activity Play

Certain event, impossible event, opposite event Student activity Play

Certain, impossible or opposite Animation Play

Changing the sign of an angle Student activity Play

Changing the sign of an angle in expressions Whiteboard exercise Play

Changing  +  to  – Whiteboard exercise Play

Changing  –  to  + Whiteboard exercise Play

Determining the sign of the tangent Whiteboard exercise Play

Determining the signs of trigonometric functions Student activity Play

Drawing opposite vectors Whiteboard exercise Play