Values of the sine and the cosine Animation Play

Values of the tangent Animation Play

Variation of electronegativity across a period Illustration Play

Variation of electronegativity across a period Simulation Play

Variation of electronegativity across a period (1) Student activity Play

Variation of electronegativity across a period (2) Student activity Play

Variation of electronegativity within a group Student activity Play

Variation of electronegativity within a group Whiteboard exercise Play

Volume of a frustum of a cone – removing the top part of a cone Whiteboard exercise Play

Volume of a frustum of a cone – rotating a right-angled trapezium Whiteboard exercise Play

Volume of a sphere – exercises Student activity Play

What can we do with a ruler and a compass? Student activity Play

What is the radius? Whiteboard exercise Play

What is the radius? Student activity Play

Which quadrant is the circle in? Simulation Play

Which quadrant is the circle in? Student activity Play

With what velocity must a satellite be provided? Simulation Play

With what velocity must a satellite be provided? Student activity Play

With what velocity must a satellite be provided? Whiteboard exercise Play