Multiplication rule – ways of ordering a dessert Whiteboard exercise Play

Multiplication with simple rules Whiteboard exercise Play

N/S rule Animation Play

Nitrogen rule Illustration 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 Class activity Play

Numerical integration – Simpson's rule Whiteboard presentation Play

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

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

Permutations Student activity Play

Permutations Animation Play

Proving the cosine rule Animation Play

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

Reducing friction Student activity 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

Ruler-and-compass constructions Class activity Play