Discover how plastic is made and used, how plastic waste affects the environment.

Presents background information on the origins of customs related to the celebration of St. Valentine's Day.

Introduces Labor Day, explaining the historical events behind it, how it became a holiday, and how it is observed.

"Where is Mandarin spoken? Where do tigers live? What is the longest river in Asia? This book answers these questions and more as it introduces young readers to the continent of Asia through age-appropriate maps, engaging photographs, and simple text. Topics covered within the book include where the continent is, climate, geography, animals and plants, countries, people and languages, natural resources, cities, and famous places"--

Introduces Columbus Day, explaining the historical events behind it, how it became a holiday, and how it is observed.

Introduces Presidents' Day, explaining the historical events behind it, how it became a holiday, and how it is observed.

This title looks at forces: what they are, what effects they have, how friction affects them and what effects different surfaces have.

Introduces the life cycle of a pumpkin from the sprouting of a seed through its 16 weeks of growth.

How do people move? What is friction? How do bicycles brakes work? Find out answers to these and more questions about force and energy.