A horizontal throw Animation Play

A prism Slideshow Play

A prism Whiteboard exercise Play

A prism Student activity Play

A triangle cut into two right-angled triangles Whiteboard exercise Play

Acute angles Student activity Play

Acute angles Whiteboard exercise Play

Altering the  y-scale and the  x-scale Student activity Play

Alternate angles Whiteboard exercise Play

Alternate exterior angles Animation Play

Alternate interior angles Animation Play

An upward vertical projection and free fall Student activity Play

An upward vertical projection and free fall Whiteboard exercise Play

Angles Simulation Play

Angles Animation Play

Angles Whiteboard exercise Play

Angles Student activity Play

Angles and parallel lines Whiteboard exercise Play

Angles and sides of quadrilaterals Student activity Play

Angles and sides of triangles Student activity Play

Angles and sides of triangles Whiteboard exercise Play

Angles around a point Whiteboard exercise Play

Angles around a point Student activity Play

Angles between lines in 3-D objects Whiteboard exercise Play

Angles between lines in 3-D objects Student activity Play