Using the double-angle formulas for the tangent to rewrite sine and cosine Student activity Play

Using the formula for linear regression Whiteboard exercise Play

Using the gradient of a line Student activity Play

Using the gradient of a line Whiteboard exercise Play

Using the least squares method Animation Play

Using the linear regression Student activity Play

Using the tangent Student activity Play

Using the tangent Animation Play

Using the tangent to find the zero of a function Whiteboard exercise Play

Values of the tangent Animation Play

Various number lines Animation Play

Vector equation of a line in 2-D Whiteboard exercise Play

Vector equation of a line in 2-D Student activity Play

Vector equation of a line in 3-D – a point and a vector Student activity Play

Vector equation of a line in 3-D – a point and a vector Whiteboard exercise Play

Vector equation of a line in 3-D – two points Student activity Play

Vector equation of a line in 3-D – two points Whiteboard exercise Play

Vector equations of lines in 2-D Class activity Play

Vector equations of lines in 3-D Whiteboard presentation Play

Vector equations of lines in 3-D Class activity Play

What can we do with a ruler and a compass? Student activity Play

What does a discharge involve? Student activity Play

What does a discharge involve? Animation Play

What does a discharge involve? Whiteboard exercise Play

What is the radius? Student activity Play