Neutralisation Animation Play

Nitrogen rule Illustration Play

Not all reactions involve collisions Student activity Play

Nucleophilic addition reactions of aldehydes and ketones Animation Play

Number patterns – activity Student activity Play

Numerical integration – mid-ordinate rule Class activity Play

Numerical integration – mid-ordinate rule Whiteboard presentation Play

Numerical integration – Simpson's rule Whiteboard presentation Play

Numerical integration – Simpson's rule Class activity Play

On what does the magnitude of the induction current depend? Student activity Play

On what does the magnitude of the induction current depend? Whiteboard exercise Play

Optical isomerism of amino acids Student activity Play

Permutations Animation Play

Permutations Student activity Play

Primary structure of proteins Student activity Play

Proving the cosine rule Animation Play

Quartet and other multiplets: 'n + 1' rule Animation Play

Reflection symmetry in the coordinate system in the line y = –x Student activity Play

Relative velocity vectors Student activity Play

Repulsion between current-carrying conductors Animation Play

Right hand rule Animation Play

Rounding decimals to a whole number Student activity Play

Rounding decimals to a whole number Animation Play

Rule for the nth term of a sequence Student activity Play

Rule for the  nth term of a sequence Whiteboard exercise Play