Most Popular Books by Christine Petersen

What are the biggest living things on Earth? Did you guess whales or elephants? The winner is not an animal at all. It is a kind of tree called the coast redwood. Using hands on activities, young readers will be introduced to the amazing world of trees.

Flowers look like pretty decorations. Did you know that they also have an important job? Flowers make seeds. Inside each seed is a tiny new plant. Using hands on activities, young readers will be introduced to the amazing world of flowers.

Dig into the world of geology with the Rock On! series! Rockin'' Rocks introduces readers to what rocks are and how they form. Chapters build concepts from the ground up, from atoms, elements, and minerals to Earth''s layers, tectonic plates, and the three classes of rock. Real-world examples like the Grand Canyon, Devils Tower, and Arches National Park bring to life igneous, sedimentary, and metamorphic rock. Full-color photographs will draw in readers while the easy-to-read text breaks down complex concepts. A colorful diagram of the rock cycle ties everything together while an at-home experiment provides the opportunity for hands-on experience. Glossary words in bold, an index, and phonetic spellings for those hard-to-pronounce geologic terms enhance and supplement the text. Checkerboard Library is an imprint of ABDO Publishing Company.

Dig into the world of geology with the Rock On! series! Fantastic Fossils introduces readers to the different types of fossils and how they form, from petrifaction and carbonization to molds, impressions, and amber. Chapters discuss key fossils finds, such as perfectly preserved mammoths and the dinosaur-like, feathered archaeopteryx. Readers will be introduced to scientists who made important discoveries and contributions to the study of fossils. They will also learn about the way we use fossils today, in the form of fossil fuels. A colorful geologic time scale spreads across two pages and an at-home experiment provides the opportunity for hands-on experience. Full-color photographs will draw in the reader while easy-to-read text breaks down complex concepts. Glossary words in bold, an index, and phonetic spellings for those hard-to-pronounce geologic terms enhance and supplement the text. Checkerboard Library is an imprint of ABDO Publishing Company.

Mammals have spread to almost every habitat on the planet and can be found on land, in the sea, and in the air. What do these animals have in common with each other and us? How do they adapt to their environments? Which mammals live near you? Scientists answer such questions through observation and experimentation—and so can you. You can create a system to classify mammal groups, compare and contrast other mammals’ body systems with your own, discover how mammals overcome seasonal challenges such as snow, set up an observation station to watch the mammals in your neighborhood, and conduct a scientific census to determine their numbers. Whether for a school science fair or just for fun, these projects will help you better understand the diverse, magnificent creatures that are our closest relatives in the animal kingdom.

This title introduces young readers to pearls, the gem formed inside the shell of an oyster! Learn how pearls are formed and where they are found. Historic and modern collection methods are detailed, both natural and cultivated. The use of pearls as a gemstone is examined including different colors. See how artisans and lapidaries create beautiful and useful jewelry with this beautiful gem. Finally, a list of tools and tips will set young rock hounds up to unearth their own treasures. Glossary words in bold, an index, and phonetic spellings for those hard-to-pronounce geologic terms enhance and supplement the text. Aligned to Common Core Standards and correlated to state standards. Checkerboard Library is an imprint of ABDO Publishing Company.

Provides comprehensive information on Earth''s climate changes. An exploration of case studies, ancient Earth''s climate, it''s impact on Arctic regions, and recent studies are explored.

More commonly known as u0091Eu0092, ecstasy or MDMA is a psychoactive drug which in users produces increased empathy, euphoria, and an altered sense of time. Ecstasy is illegal in most of the world, however studies continue to pursue ecstasy and its help in the treatment of PTSD. As an uncontrolled substance however, this drug is dangerous and over time can alter brain chemistry, increase depression and anxiety, and effect the nervous system. This timely book exposes readers to personal stories from teens coping with ecstasy abuse. It also provides warning signs, treatment options, and most importantly, solutions. Sidebars, a relevant glossary of terms, current websites, and science content are included in this detailed look into the teen issue of ecstasy use and abuse.

Discusses events leading up to the 1986 Iran-Contra scandal, wherein the Reagan administration sold guns to Iran in exchange for hostages and assisted rebels trying to overthrow the government of Nicaragua.

Dig into the world of geology with the Rock On! series! Mighty Minerals introduces readers to what minerals are, how they form, and how we use them today. Chapters discuss how to identify minerals, including color, luster, streak, fracture, hardness, specific gravity, magnetism, and fluorescence. A colorful diagram of the rock cycle furthers understanding of mineral formation and an at-home experiment provides the opportunity for hands-on experience. Full-color photographs will draw in readers while the easy-to-read text and helpful diagrams break down complex concepts. Glossary words in bold, an index, and phonetic spellings for those hard-to-pronounce geologic terms enhance and supplement the text. Checkerboard Library is an imprint of ABDO Publishing Company.

Where does food come from? How many plants do we eat? Using hands on activities, young readers will develop critical thinking skills as they gain a better understanding of the plants we eat.

This fascinating book explores the life of a colonial printer and his importance to the community, as well as everyday life, responsibilities, and social practices during that time.

Discover Great National Parks: Yosemite is an excellent non-fiction book for young learners. It features information of what Yosemite was like before it was a park, how it became a national park, and most of all, the Grizzly Giant, a 30-story tall and thousands of years old Sequoia tree, along with the wildlife that lives there, including the endangered bighorn sheep. Famous visitors to Yosemite are John Muir and President Theodore Roosevelt. See beautiful photographs, both current and historical, of the land, fun facts about the park and learn more through the chapter notes, suggested readings, and glossary.

This fascinating book explores the life of a colonial tailor and his importance to the community, as well as everyday life, responsibilities, and social practices during that time.

This fascinating book explores the life of a colonial surveyor and his importance to the community, as well as everyday life, responsibilities, and social practices during that time.

This book explores the life of a colonial blacksmith and his importance to the community, as well as everyday life, responsibilities, and social practices during that time.

Who makes up the House of Representatives and the Senate? What kind of power does Congress have? Find the answers to these questions and more in this title. Primary sources with accompanying questions, multiple prompts, Important Dates section, index, and glossary also included. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.

A wheelwright�s main job was to make wooden wheels for horse-drawn carriages. In this book, discover how people were kept aloft on their carriages and rolling through colonial times. This historical volume chronicles the formative years of the United States through the activities and occupations of its community members. In this book, explore the everyday life, responsibilities, social life as a colonial wheelwright, and the affect of the profession on colonial America. Hands-on activities and recipes, sidebars detailing the history and evolution of the profession and key social studies words defined in the glossary.

Who makes up the Judicial Branch? How are members of the Judicial Branch appointed? Find the answers to these questions and more in this title. Primary sources with accompanying questions, multiple prompts, Important Dates section, index, and glossary also included. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.

Discover Rocks introduces readers to what rocks are and how they form. Real-world examples bring to life igneous, sedimentary, and metamorphic rock. Full-color photographs will draw in readers while the easy-to-read text breaks down complex concepts. A diagram of the rock cycle ties everything together and a geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, and an index. Aligned to Common Core Standards and correlated to state standards. Checkerboard Library is an imprint of Abdo Publishing, a division of ABDO.