Err

Where science meets magic and fun meets education!

Maths Toys

Magic Cube
An elegant, transforming geometric puzzle. Based on the Yoshimoto Cube, which we used to sell about 20 years ago!
9.99
Funky Dice
These very unusual dice swivel in the middle.  Each 'half' dice has 4 sides, marked with zero, one, two or three pips. The minimum score is zero, and the maximum score is 6. Throwing one of these dice has 16 possible combinations. Not your regular dice! 
9.99
Non Transitive Dice - Set 1
An amusing new game to trick and baffle your friends, based on a recent discovery made at Stanford University, USA. These so-called 'Non Transitive...
3.99
Non Transitive Dice - Set 2
Another variation on Non Transitive Dice, this time based on a set of three dice. The number combinations are 1, 4, 4, 4, 4, 4; 3, 3, 3, 3, 3, 6; and...
3.99
Sicherman Dice
An unusual pair of dice. One has sides 1,3,4,5,6,8. The other has sides 1,2,2,3,3,4. Martin Gardner reported on the discovery of these dice by a...
3.99
Educated Monkey
A really charming tin toy this one. We like it a lot!The monkey is articulated, and when you set the feet to a particular combination of numbers,...
13.99
Solids of Constant Width
A set of 3 solids of constant width, made from solid aluminium, with a width of 35mm. Whichever way you roll them, their width is always the same!
29.99
Dudeney's Dissection
We are very proud to be able to offer this beautiful physical version of Dudeney's Dissection, where the 4 pieces are hinged, so that you can...
100.00
Napiers Bones
John Napier (1550 - 1617) was a Scottish mathematician, who made many contributions to arithmetic, including the invention of logarithms. When Kepler...
17.99
Tangram
The tangram consists of seven flat shapes, called tans, which are put together to form shapes. This ancient puzzle originated in China, and was...
10.00