 
All items may be printed off and copied for your own or classroom use, but MAY NOT be used for wider publication in any form without permission or credit. Thank you. If you'd like to book Kjartan to do maths demonstrations please see Kjartan Poskitt Appearances If Kjartan is unavailable, we strongly recommend Andrew Jeffrey. He's a really neat magician/maths teacher who does excellent shows in schools suitable for key stages 14.  
 
ACTIVITIES
pages with a video demonstration Making Flexagons A simple video guide to show how to make a triflexagon. This page has a printable template you can copy and hand out. There is also the more advanced Fabulous Flexagons page.  
NUMBER TRICKS
The Massive Number Prediction A trick where the volunteer adds five huge numbers, but you have written the answer down even before you know what the numbers are! The 71113 trick A trick multiplication you can do faster than a calculator The Prime Numbers Trick A strange little prediction A betting trick with seven cards that always makes money! The Red and Black Mystery! A card trick to baffle people, and you don't even need to touch the cards! The Mindreader A prediction trick. (Hint: it relies on the properties of the number nine!) The Five Card Trick As presented here, this trick encourages use of the 5x table for younger kids. You could make different versions, e.g. the "seven" card trick would familiarise kids with the seven times table and for this the cards would need to be numbered 17 and 814.
The Fibonacci Trick A nice little prediction which involves a Fibonacci series. Finger Times Tables How to multiply up to 10x10 with your fingers. The 1089 Trick and some 1089 facts!
 
POWERPOINT FIBONACCI
 
MISCELLANEOUS FUN
 
PUZZLES
The Devil's Dice A tough puzzle involving cube nets and logic! The Pyramid Puzzle Can you count the triangles? The 3D Noughts and Crosses Puzzle Practise thinking in three dimensions. The Twelve Coin Balance Problem The old classic puzzle  with a full answer if you need it! The Brainbenders A very random collection of things we've been sent in by readers. OTHER PAGES THAT MIGHT BE USEFUL
 
