A rectifying system Animation Play

A refracting telescope Student activity Play

A refracting telescope Animation Play

A square in a coordinate system Whiteboard exercise Play

A system of resistors Animation Play

A system of simultaneous equations Animation Play

A thermodynamic system and the surroundings Animation Play

A thermodynamic system and the surroundings Whiteboard exercise Play

A thermodynamic system and the surroundings Student activity Play

A throw of a ball Whiteboard exercise Play

A tide Student activity Play

A tide Whiteboard exercise Play

A triangle in a coordinate system Whiteboard exercise Play

A vector equation of a line passing through two points – justification Animation Play

A vibrating beam Student activity Play

A vibrating beam Whiteboard exercise Play

About the experiment Whiteboard exercise Play

Absorption of the products of lipid digestion Animation Play

Absorption of the products of protein; carbohydrate and lipid digestion Student activity Play

Acid dissociation constant and pH (1) Student activity Play

Acid dissociation constant for lactic acid Animation Play

Addition reactions Whiteboard exercise Play

Additional information contained in chemical equations Student activity Play

Against the wind and with the wind Whiteboard exercise Play

Against the wind and with the wind Student activity Play