A group of characters introduce basic science questions and answer them using simple, hands-on projects. These fun projects encourage younger children to investigate the world around them, whilst introducing them to fundamental science principles. How Long Did I Sleep? Looks at measuring time during the 24 hours of the day, calendars, using the sun to measure time, units of time, and differences between short and long time.

 

This book features in the following series: How What Why ?, How? What? Why? .

There are 24 pages in this book. This book was published 2003 by Hachette Children's Group .

Stewart Ross is a popular children's author. He has written many books on historical subjects, both fiction and non-fiction.