Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

Explore patterns based on a rhombus. How can you enlarge the pattern - or explode it?

What is the remainder when 2^2002 is divided by 7? What happens with different powers of 2?

A garrison of 600 men has just enough bread ... but, with the news that the enemy was planning an attack... How many ounces of bread a day must each man in the garrison be allowed, to hold out 45. . . .

When the number x 1 x x x is multiplied by 417 this gives the answer 9 x x x 0 5 7. Find the missing digits, each of which is represented by an "x" .

Learn how to use advanced pasting techniques to create interactive spreadsheets.

Learn how to use increment buttons and scroll bars to create interactive Excel resources.

Learn how to make a simple table using Excel.

Investigate factors and multiples using this interactive Excel spreadsheet. Use the increment buttons for experimentation and feedback.

This investigation uses Excel to optimise a characteristic of interest.

The items in the shopping basket add and multiply to give the same amount. What could their prices be?

Can you convince me of each of the following: If a square number is multiplied by a square number the product is ALWAYS a square number...

Can you prove this formula for finding the area of a quadrilateral from its diagonals?