A mirror and a light bulb Animation 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 Student activity Play

A perpendicular through a point on the line Simulation Play

A point of tangency Whiteboard exercise Play

A point, a radius and an angle Animation Play

A snail's trip Whiteboard exercise Play

A square in a coordinate system Whiteboard exercise Play

A symmetrical triangle on squared paper Student activity Play

A system of simultaneous equations Animation Play

A triangle in a coordinate system Whiteboard exercise Play

Aberration Animation Play

Accurately determining an unknown molarity of acid/base by titration Whiteboard exercise Play

Accurately determining an unknown molarity of acid/base by titration Student activity Play

Acid-base titration Class activity Play

Acid-base titration Whiteboard presentation Play

Aldehydes and ketones Whiteboard presentation Play

Aldehydes and ketones Class activity Play

Algebraic solutions Student activity Play

Algebraic solutions Whiteboard exercise Play

Alkanes and cycloalkanes Whiteboard presentation Play

Alkanes and cycloalkanes Class activity Play

Allotropes of carbon Animation Play

Amino acids Whiteboard presentation Play