Scientists conduct experiments to gather information that will prove or disprove their hypotheses. Chapters explain how experiments are set up with controls and variables, how to write up observations
In today's uncertain world, many families are leaving their home countries and seeking a better life in the United States. Immigrants from Mexico and Central America explores the stories of two boys w
The focus in this book is on the first step of the scientific method. Readers will learn how to identify a topic that interests them and to narrow it down to a more specific question that they want to
A hypothesis is an educated guess, and this volume breaks down the necessary steps to forming a good one. Chapters focus on showing kids how to make scientific observations, how to find good sources f
Why did Columbus want to reach the New World—and was he the first to cross the Atlantic Ocean? What was life like on one of his ships? What did America look like before Columbus arrived? How did Colum
Shine the science spotlight on frogs, toads, newts, salamanders, and caecilians! Organized by reference topics such as habitat, anatomy, and diet, Amphibians introduces young readers and browsers to t
Experiments allow people to test and potentially revise their hypotheses. Kids will learn that planning and setting up an experiment requires an understanding of controls and variables, as well as how
Famed for their masked faces and intelligence, raccoons are omnivores and happily scavenge rotting meats, fruits, or vegetables. They will steal pet food and break into garbage cans, too. They have ma
Heat energy is found everywhere, including the Suns rays and the Earths heat under the ground. This volume defines heat and thermal energy, explains the states of matter, explores measuring heat, and
Ravens are often feared as symbols of bad luck or even death. And they can often be spotted eating rotting meat. However, ravens are smart, adaptable birds and excellent hunters and foragers. They use
Explores the physical characteristics, feeding habits, behaviors, and habitats of different types of crustaceans, including information on mantis shrimps, barnacles, king crabs, and wood lice.
Presenting crabs, shrimp, lobsters, barnacles, and krill! Crustaceans is an eye-catching animal-science reference book for young readers and browsers. Covering all the basic topics, including habitat,
"What do taxes, jury duty, and being good citizens have to do with helping our government? Using engaging, age-appropriate language and colorful photos, readers understand our responsibilities as Amer
What do taxes, jury duty, and being good citizens have to do with helping our government? Using engaging, age-appropriate language and colorful photos, readers understand our responsibilities as Ameri
Loads of information are packed into each title of this series about world inventors and innovative thinkers, including time lines, sidebars, a glossary, maps, rare photographs, and world-class writin
Vote for me! It's election time, and campaign ads are everywhere. But what does fundraising, door knocking, and campaigning have to do with getting elected? Readers learn all about political campaigns
Readers will learn all about farm sprayers, including how farmers use them and how this farming technology might change and evolve in the future. This book is published in collaboration with New Holla
What are our civil rights, and how are they different from our legal rights? What do gender, age, discrimination, and the U.S. Constitution have to do with our civil rights? Using engaging, age-approp
What are our civil rights, and how are they different from our legal rights? What do gender, age, discrimination, and the U.S. Constitution have to do with our civil rights? Using engaging, age-approp
The light energy we perceive is only a small portion of light and radiant energy that exists. Readers discover how light travels in waves and how different frequencies of light waves comprise the diff
Tells the stories in their own words of several of the thousands of Jewish children rescued from Nazi Germany between 1938 and 1940 and brought to new homes in the United Kingdom. Memoir pieces, poems
The rumble of thunder is a sign of a storm, and by listening we can estimate how far away that storm is. Readers explore the principles of sound energyincluding qualities of sound, sound waves, and th
It was the biggest event in the history of women's sports. And for the Americans, it came down to five kicks. After regulation play and two overtimes in the final game of the 1999 women's World Cup so
