An environment that enables you to investigate tessellations of
A collection of our favourite pictorial problems, one for each day
Match pairs of cards so that they have equivalent ratios.
This game challenges you to locate hidden triangles in The White
Box by firing rays and observing where the rays exit the Box.
A metal puzzle which led to some mathematical questions.
Use an Excel spreadsheet to explore long multiplication.
A simple file for the Interactive whiteboard or PC screen,
demonstrating equivalent fractions.
An Excel spreadsheet with an investigation.
Use Excel to explore multiplication of fractions.
Match the cards of the same value.
Here is a chance to play a fractions version of the classic
Use an interactive Excel spreadsheet to explore number in this
Use an Excel to investigate division. Explore the relationships
between the process elements using an interactive spreadsheet.
Use Excel to practise adding and subtracting fractions.
Use Excel to investigate the effect of translations around a number
Use an interactive Excel spreadsheet to investigate factors and
A tool for generating random integers.
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
A collection of resources to support work on Factors and Multiples at Secondary level.
Can you make a right-angled triangle on this peg-board by joining
up three points round the edge?
Help the bee to build a stack of blocks far enough to save his
friend trapped in the tower.
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.
Square It game for an adult and child. Can you come up with a way of always winning this game?
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. . . .
Can you beat the computer in the challenging strategy game?
The classic vector racing game brought to a screen near you.
Can you beat Piggy in this simple dice game? Can you figure out
Piggy's strategy, and is there a better one?
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.
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 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?
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?
Can you discover whether this is a fair game?
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.
Cellular is an animation that helps you make geometric sequences composed of square cells.
This interactivity invites you to make conjectures and explore
probabilities of outcomes related to two independent events.
Can you be the first to complete a row of three?
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.
Semi-regular tessellations combine two or more different regular polygons to fill the plane. Can you find all the semi-regular tessellations?
A tilted square is a square with no horizontal sides. Can you
devise a general instruction for the construction of a square when
you are given just one of its sides?
Overlaying pentominoes can produce some effective patterns. Why not
use LOGO to try out some of the ideas suggested here?
Slide the pieces to move Khun Phaen past all the guards into the position on the right from which he can escape to freedom.
What are the areas of these triangles? What do you notice? Can you generalise to other "families" of triangles?
We can show that (x + 1)² = x² + 2x + 1 by considering
the area of an (x + 1) by (x + 1) square. Show in a similar way
that (x + 2)² = x² + 4x + 4
A circle rolls around the outside edge of a square so that its circumference always touches the edge of the square. Can you describe the locus of the centre of the circle?
Triangle numbers can be represented by a triangular array of squares. What do you notice about the sum of identical triangle numbers?
When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...
Investigate how logic gates work in circuits.
Can you find all the 4-ball shuffles?
Use the interactivity to make this Islamic star and cross design.
Can you produce a tessellation of regular octagons with two
different types of triangle?
Show how this pentagonal tile can be used to tile the plane and
describe the transformations which map this pentagon to its images
in the tiling.