You have taken an important step towards making your child a number expert.

These 30 Second Challenge books have been written to build-up gradual, step by step improvements in children’s understanding and memory of number facts. The books provide an entertaining approach to developing mental arithmetic skills. Children spend 15 minutes each day tackling the carefully graded challenges and, in no time at all, they are able to perform mental gymnastics quickly and accurately.

On this site you will be able to see sample pages of the books, learn how best to use the books, and of course, you will be able to buy the books.

To access the sample pages and the "How to use these e-Book" pages you will need Adobe Reader on your computer. If you do not have this facility already you can download it here for free. Simply click on the Adobe Reader button.