Mathematically proficient people know how to connect numbers to situations. To nurture an understanding of numbers, young learners use objects to aid them in conceptualizing and solving… More →

It's not always easy to spot a deadly snake-and if you do, it may be too late! The killers in this set don't want to bite people, but if threatened, they're dangerous. The main text of each… More →

Science and engineering meet in this engrossing set! Amazing machines from the past and present are highlighted throughout its pages, including airships, cranes, submarines, and many more.… More →

Colors, letters, sizes, shapes, numbers, and money are key topics for early learners to grasp before they can build on them in later math and language arts classes. This colorfully designed… More →

Colors, letters, sizes, shapes, numbers, and money are key topics for early learners to grasp before they can build on them in later math and language arts classes. This colorfully designed… More →

Mythology and cryptozoology have long been a part of mainstream culture, including our favorite books, movies, and TV shows. Many young people may wonder if there's any truth regarding the… More →

Everything around us, and even our own bodies, is made of matter. Understanding what matter is made of, its states, and its properties is a crucial part of the physical science curricula in… More →

A forest is a delicately balanced ecosystem, and each animal that lives in it plays an important role. Some of these animals, such as foxes and bobcats, are beloved because people consider… More →

History is truly the story of humankind through the ages. Making the inventions and discoveries of the past more relatable can help readers better understand the past. This set does even… More →

Many animals on Earth make incredible journeys each year. These migrations happen by air, water, and land-and span many hundreds or thousands of miles. This series invites readers to come… More →