Ancient Machines: From Wedges to Waterwheels (Ancient Technology)

Rating:
Summary: Ancient machines
Review: THIS BOOK IS AWSOME

I loved it. Mary and Michal Woods did a bomb job. I loved learning about ancient machines. How the pully,wedge,lever came from as late as the stone age. Ancient people are not as primitave as I thoght.

Rating:
Summary: A great book for kids.
Review: This is a perfect and fascinating book for children and their parents too. My grandchildren will be getting this for Christmas.