This is volume 6 in Checkers .

This book is aimed at children in primary school.

There are 32 pages in this book. This book was published 1999 by Hachette Children's Group .

Kathryn Senior is a former biomedical research scientist who studied at Cambridge University for a degree and doctorate in microbiology. After four years in research she joined the world of publishing as an editor of children's science books. She has now been a full-time science writer for 8 years.