A bee's flight path Animation Play

A circle and a line Animation Play

A different way of numbering groups in the periodic table Animation Play

A path of motion Student activity Play

A path of motion Whiteboard exercise Play

A segment and a position vector of its midpoint Simulation Play

A trip to some destination Simulation Play

Abundance of chemical elements in nature Whiteboard exercise Play

Abundance of chemical elements in nature Student activity Play

Abundance of elements in nature Slideshow Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Abundance of the principal elements in the Universe Slideshow Play

Across the periodic table Student activity Play

Addition of elements to alkenes Student activity Play

Addition of elements to alkenes Whiteboard exercise Play

Application of polarisation filters Student activity Play

Application of polarisation filters Whiteboard exercise Play

Application of position vectors Animation Play

Application of transition elements and their compounds Slideshow Play

Applications of elements arising from their conductivities Slideshow Play

Arithmetic mean – 'balancing point' of the data Whiteboard exercise Play

Arithmetic mean – 'balancing point' of the data Student activity Play

Arrangement of chemical elements in the periodic table Student activity Play

Arrangement of the elements in the periodic table Whiteboard exercise Play

Atom – the basic component of matter Animation Play