Tangent to a circle through a point not on the circle Whiteboard exercise Play

Tangent to a circle through a point not on the circle Student activity Play

Thank you; I do not use drugs Animation Play

The apples that do not fall into the basket Whiteboard exercise Play

The extremum points when the derivative does not exist Whiteboard exercise Play

The local maximum and minimum when the derivative does not exist Student activity Play

Transistors and gates Whiteboard presentation Play

Transistors and gates Class activity Play

What decides whether an atomic mass is a whole number or not Animation Play

What if gases did not mix with each other? Animation Play

When does the Doppler effect not exist? Animation Play

When is 'work' not work Whiteboard exercise Play

When is 'work' not work Student activity Play

When prevention is not enough – drugs and surgery Student activity Play

When prevention is not enough – drugs and surgery Whiteboard exercise Play

When the final speed is not given Animation Play

When the Lorentz force is not acting Whiteboard exercise Play

When the Lorentz force is not acting Simulation Play

When the Lorentz force is not acting Student activity Play

Why atomic masses are not usually whole numbers? Student activity Play

Why do magnesium and chlorine form the compound MgCl2, but not MgCl? Animation Play

Why does copper not displace zinc from a solution of a zinc salt? Animation Play

Why halobenzenes do not react with ammonia? Animation Play

Why not all liquids are miscible with water? Student activity Play

Why not all liquids are miscible with water? Whiteboard exercise Play