How to construct a line parallel to a given line Student activity Play

How to construct a line perpendicular to a given line Student activity Play

How to construct a line perpendicular to a given line Animation Play

How to construct a perpendicular bisector Animation Play

How to construct the perpendicular bisector of a segment Student activity Play

How to estimate the gradient of a curve Animation Play

How to find the equation of a tangent from a point to a circle? Animation Play

Huygens' Principle Student activity Play

Huygens' principle Whiteboard exercise Play

Identities for trigonometric functions Whiteboard presentation Play

Identities for trigonometric functions Class activity Play

Increasing perpendicular distances Whiteboard exercise Play

Inscribed circles, circumscribed polygons Student activity Play

Inverse function of the tangent Student activity Play

Inverse trigonometric functions Whiteboard presentation Play

Inverse trigonometric functions Class activity Play

Justification of the tangent function identity Animation Play

Kites Student activity Play

Line that is tangent to both circles Animation Play

Locus Student activity Play

Looking for the formula for a trigonometric function Simulation Play

Looking for the formula for a trigonometric function Student activity Play

Miscellaneous problems Student activity Play

More about the rate of change Student activity Play

More constructions Student activity Play