Describes different kinds of bridges, their history, design, construction, and effects on populations, environmental dilemmas, safety, and more.

A hands-on introduction to the science of meteorology, explaining how to make equipment to measure rainfall, wind direction, and humidity, record measurements and observations in a weather log, make weather predictions, and perform other related activities.

Grab your No Biggie Bag and hit the pavement -- it's Halloween! The No Biggie Bunch doesn't just trick-or-treat, they TRADE-or-treat as they swap the candy they're allergic to for space-age surprises. Treats have never been sweeter!

Presents fifty hands-on activities to introduce the science of geology and explain the formation and history of the earth.

Discusses the history, language, religion, customs, and daily life of Mexico, using a variety of activities to reinforce the information.

"From the planning stage to the finished product, this book allows readers to see how a skyscraper is built." --

Explores the facts and questions of human evolution through hands-on activities, crafts, and experiences.

Gives instructions for a variety of experiments that examine the characteristics of some of the common elements around us.