Tools of Timekeeping: A Kid's Guide to the History & Science of Telling Time

This book takes us on a trek through time - literally. We learn about timekeeping from the calendars of the earliest civilizations all the way up to atomic clocks and beyond. I have to say that I got as much out of this book as my kids did. I had used terms like "quartz timing" or "atomic clock" before without really understanding what they are. The best part of the book for most kids will probably be the activities. My daughter loved the incense clock especially. None of the activities required any hard-to-get materials, and we look forward to trying more of them. I have to give special kudos to the extensive glossary as well.