A chord and a diameter of a circle Whiteboard exercise Play

A chord and a diameter of a circle Student activity Play

A circle in the coordinate system Whiteboard exercise Play

A circular arc Student activity Play

A circumference Animation Play

A diameter Animation Play

A magnifying glass Student activity Play

A magnifying glass Animation Play

A microscope Student activity Play

A microscope Animation Play

A space colony – factorisation makes calculations easier Student activity Play

A triangle and circles Student activity Play

An application Student activity Play

Applying proportion Student activity Play

Approximation of the area of a circle Animation Play

Arcs Whiteboard exercise Play

Arcs Student activity Play

Area and circumference – calculation problems Whiteboard exercise Play

Area and circumference – calculation problems Student activity Play

Avalanche of fission reactions Animation Play

Avalanche of fission reactions Student activity Play

Binoculars Whiteboard exercise Play

Binoculars Student activity Play

Calculating the diameter of the circle Whiteboard exercise Play

Calculating the radius, given the area Student activity Play