A circle and a line Student activity Play

A circle and a line Whiteboard exercise Play

A circle and a line Animation Play

A circle and a straight line Student activity Play

A circle and a straight line Student activity Play

A circle and a straight line Whiteboard exercise Play

A circle and a straight line Simulation Play

A closed curve Student activity Play

A closed curve Whiteboard exercise Play

A closer look at the sine Whiteboard exercise Play

A closer look at the sine, the cosine and the tangent Whiteboard exercise Play

A closer look at the trigonometric ratios Student activity Play

A constant function Animation Play

A converging lens Animation Play

A figure surrounded by straight lines Whiteboard exercise Play

A figure surrounded by straight lines Student activity Play

A golden section Animation Play

A half-plane bounded by a line Animation Play

A line and a circle Whiteboard exercise Play

A line and a circle Student activity Play

A line and a point of symmetry Animation Play

A line going through two points Animation Play

A line in 3-D going through two points Simulation Play

A line in space Animation Play

A line of best fit Whiteboard exercise Play