Search

problem

Favourite

School Fair Necklaces

5 to 11

How many possible symmetrical necklaces can you find? How do you know you've found them all?

article

The Development of Algebra - 1

11 to 18

This is the first of a two part series of articles on the history of Algebra from about 2000 BCE to about 1000 CE.

article

The Power of Dimensional Analysis

14 to 18

An introduction to a useful tool to check the validity of an equation.

article

The Eternity Puzzle

16 to 18

A big prize was offered for solving The Eternity Puzzle, a jigsaw with no picture and every piece is the same on both sides. The finished result forms a regular dodecagon (12 sided polygon).

problem

Sam Again

11 to 14

Here is a collection of puzzles about Sam's shop sent in by club members. Perhaps you can make up more puzzles, find formulas or find general methods.

problem

Penta Primes

7 to 11

Using all ten cards from 0 to 9, rearrange them to make five prime numbers. Can you find any other ways of doing it?

problem

Graphing Number Patterns

7 to 11

Does a graph of the triangular numbers cross a graph of the six times table? If so, where? Will a graph of the square numbers cross the times table too?