"Hawaii is a chain of islands known for its sand, surf, sun and...cowboys? Yes! Cowboys called paniolos are an important part of Hawaiian history and culture. Grab your favorite cowboy hat as you wran
"Making models is a fun activity for people who like to build things. But, it isn't all fun and games. Models were originally created to solve problems and simplify complex ideas. They were used to un
"Whales may share the ocean with fish, but these large mammals are very different creatures. Dive into addition and subtraction as you get to know some of the many species of whales and what makes the
Describes the history of toilets from ancient Rome to the the present, explains how modern toilets work, discusses sanitation problems in developing countries, and provides information on solving prob
"Dinosaurs have fascinated the world for centuries. Some are extreme carnivores, gigantic, and totally deadly. Others are oddballs with strange adaptations. Discover extreme dinosaur species as you pr
"Journey to the remote and isolated place known as Easter Island. The island has a rich culture and history, plotted on the ocean's vast grid. Many people visit to see and learn about the island's une
Tackle today's toughest races as you learn about fractions. Marvel as contestants around the world climb, crawl, run, and jump through each race. You'll see what it takes to conquer a world-class cour
