A body on an inclined plane Student activity Play

A circle and a line Animation Play

A figure surrounded by straight lines Student activity Play

A figure surrounded by straight lines Whiteboard exercise Play

A force perpendicular to the velocity vector Whiteboard exercise Play

A force perpendicular to the velocity vector Student activity Play

A perpendicular through a point off the line Student activity Play

A perpendicular through a point off the line Simulation Play

A perpendicular through a point on the line Simulation Play

A perpendicular through a point on the line Student activity Play

About moment Student activity Play

Addition of forces Class activity Play

Addition of forces Whiteboard presentation Play

Addition of forces Class activity Play

Aluminium oxide has many faces Slideshow Play

Billiard ball collisions and the velocity vectors Student activity Play

Blot and symmetry Animation Play

Chord bisector goes through the centre Student activity Play

Circle inscribed into a parallelogram Simulation Play

Circle inscribed into a triangle Student activity Play

Constructing a perpendicular bisector Simulation Play

Constructing a perpendicular to a given line Simulation Play

Constructing a perpendicular to line at a point off the line Simulation Play

Construction of a circle inscribed into a triangle Animation Play

Construction of a parallel line Animation Play