Police officers are the protective barrier standing between the public on one side and lawlessness on the other - the so-called "thin blue line." A high-stress job, officers face daily… More →
Crabtree Classics
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Political Leaders chronicles the dramatic achievements of female political leaders from around the world. Countries, cultural traditions, and ideas explored include the role of Muslim women,… More →
Political maps are often the first kind of maps children learn about. These maps identify the boundaries of countries, states or provinces, and cities, as well as such physical features as… More →
Pollution is seriously damaging our planet. Human activity and waste are harming the environment by polluting the air, water, and land. Discover the facts about where pollution comes from,… More →
Famous for his search for the legendary Fountain of Youth, Spanish conquistador Ponce de León is credited with the discovery of Florida in 1513 as well as making Puerto Rico and the Gulf… More →
From where they sleep to what they eat, this book gives you all the advice you need to become a pony's best pal. Learn the inside information on how ponies communicate, and how to understand… More →
During recess, friends learn about place value by working together to add and subtract by tens on the playground at school. More →
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