Use this animation to experiment with lotteries. Choose how many balls to match, how many are in the carousel, and how many draws to make at once.
Can you beat Piggy in this simple dice game? Can you figure out Piggy's strategy, and is there a better one?
A simple spinner that is equally likely to land on Red or Black. Useful if tossing a coin, dropping it, and rummaging about on the floor have lost their appeal. Needs a modern browser; if IE then at. . . .
Use Excel to explore multiplication of fractions.
Use an Excel spreadsheet to explore long multiplication.
Match pairs of cards so that they have equivalent ratios.
Use an interactive Excel spreadsheet to investigate factors and multiples.
A simple file for the Interactive whiteboard or PC screen, demonstrating equivalent fractions.
Use Excel to practise adding and subtracting fractions.
An Excel spreadsheet with an investigation.
This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
Identical discs are flipped in the air. You win if all of the faces show the same colour. Can you calculate the probability of winning with n discs?
Use Excel to investigate the effect of translations around a number grid.
This game challenges you to locate hidden triangles in The White Box by firing rays and observing where the rays exit the Box.
A tool for generating random integers.
Use an interactive Excel spreadsheet to explore number in this exciting game!
Use an Excel to investigate division. Explore the relationships between the process elements using an interactive spreadsheet.
A collection of resources to support work on Factors and Multiples at Secondary level.
An environment that enables you to investigate tessellations of regular polygons
How good are you at estimating angles?
The aim of the game is to slide the green square from the top right hand corner to the bottom left hand corner in the least number of moves.
7 balls are shaken in a container. You win if the two blue balls touch. What is the probability of winning?
Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The winner is the player to take the last counter.
Help the bee to build a stack of blocks far enough to save his friend trapped in the tower.
Can you put the 25 coloured tiles into the 5 x 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
A collection of our favourite pictorial problems, one for each day of Advent.
Here is a chance to play a fractions version of the classic Countdown Game.
Can you beat the computer in the challenging strategy game?
Can you find a reliable strategy for choosing coordinates that will locate the robber in the minimum number of guesses?
Match the cards of the same value.
Can you set the logic gates so that the number of bulbs which are on is the same as the number of switches which are on?
A metal puzzle which led to some mathematical questions.
Given the nets of 4 cubes with the faces coloured in 4 colours, build a tower so that on each vertical wall no colour is repeated, that is all 4 colours appear.
Can you be the first to complete a row of three?
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.
Use the interactivity or play this dice game yourself. How could you make it fair?
Six balls of various colours are randomly shaken into a trianglular arrangement. What is the probability of having at least one red in the corner?
Is this a fair game? How many ways are there of creating a fair game by adding odd and even numbers?
Cellular is an animation that helps you make geometric sequences composed of square cells.
Try out the lottery that is played in a far-away land. What is the chance of winning?
Can you discover whether this is a fair game?
Investigate how logic gates work in circuits.
Meg and Mo still need to hang their marbles so that they balance, but this time the constraints are different. Use the interactivity to experiment and find out what they need to do.
These formulae are often quoted, but rarely proved. In this article, we derive the formulae for the volumes of a square-based pyramid and a cone, using relatively simple mathematical concepts.
What is the relationship between the angle at the centre and the angles at the circumference, for angles which stand on the same arc? Can you prove it?
Learn how to use the Shuffles interactivity by running through these tutorial demonstrations.
Practise your diamond mining skills and your x,y coordination in this homage to Pacman.
You can move the 4 pieces of the jigsaw and fit them into both outlines. Explain what has happened to the missing one unit of area.
A and B are two interlocking cogwheels having p teeth and q teeth respectively. One tooth on B is painted red. Find the values of p and q for which the red tooth on B contacts every gap on the. . . .
Euler discussed whether or not it was possible to stroll around Koenigsberg crossing each of its seven bridges exactly once. Experiment with different numbers of islands and bridges.