How to find first and second differences 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 Class activity Play

Identities for trigonometric functions Whiteboard presentation Play

Inertia Whiteboard presentation Play

Inertia Class activity Play

Inverse function of the tangent Student activity Play

Inverse trigonometric functions Class activity Play

Inverse trigonometric functions Whiteboard presentation Play

Justification of the tangent function identity Animation Play

Kepler's Laws Student activity Play

Kepler's Second Law Animation Play

Kirchhoff's Second Law Student activity Play

Kirchhoff's Second Law Simulation Play

Kirchhoff's Second Law Whiteboard exercise Play

Line that is tangent to both circles Animation Play

Locus Student activity Play

Looking for the formula for a trigonometric function Student activity Play

Looking for the formula for a trigonometric function Simulation Play

Mendel's second law – the law of independent assortment Student activity Play

Mendel's second law – the law of independent assortment Whiteboard exercise Play

Miscellaneous problems Student activity Play

Momentum Class activity Play