"From the phases of the moon seen on Earth to the rotation of far off galaxies, mathematics can be used to explain what's happening in the universe. Full-color photographs and related age-appropriate math questions engage young readers and give real world applications to mathematics."--

Because this is the only math practice book that gives You the chance to be an Astronaut!, Discover how astronauts use math every day. Use real life data to make actual astronaut calculations. Practice your math skills doing fun activities. Learn facts about space travel, the Moon, and the planets. With more than 50 math questions and activities, this entertaining series reinforces the math studied in school, plus literacy skills and science. Book jacket.

Fun pictograms and infographics about space make learning about math topics such as angles, decimals, and probability easy and fun. In this book, readers are in control of a space mission through the Solar System and use their mathematical skills to navigate past comets, dodge asteroids, and land on the surface of Mars! Math puzzles and exercises help children build confidence in their math skills.

A page-turning novel that is also an exploration of the great philosophical concepts of Western thought, Jostein Gaarder's Sophie's World has fired the imagination of readers all over the world, with more than twenty million copies in print. One day fourteen-year-old Sophie Amundsen comes home from school to find in her mailbox two notes, with one question on each: "Who are you?" and "Where does the world come from?" From that irresistible beginning, Sophie becomes obsessed with questions that take her far beyond what she knows of her Norwegian village. Through those letters, she enrolls in a kind of correspondence course, covering Socrates to Sartre, with a mysterious philosopher, while receiving letters addressed to another girl. Who is Hilde? And why does her mail keep turning up? To unravel this riddle, Sophie must use the philosophy she is learning—but the truth turns out to be far more complicated than she could have imagined.

Volcanoes are many different shapes and sizes. They can be dormant or active. Students will learn about the different kinds of volcanoes and discover what makes a volcano erupt.

Originally published: Boston: Houghton Mifflin, 1987.

Investigates the sense and nonsense in twenty-two familiar sayings about the body, such as "An apple a day keeps the doctor away."