Grade 4

What's a contraction? You'll find the answer inside this book―it's brimming with contractions! Brian P. Cleary's playful rhymes and Brian Gable's humorous illustrations don't shy away from… Read More →

Throughout history and into the modern day, people have moved from place to place to flee danger and seek out better lives. But immigrants and refugees often meet harsh realities on their… Read More →

Three children from other countries (Somalia, Spain, and Korea) struggle to adjust to their new home and school in the United States. Read More →

On December 18, 2019, Donald Trump became the third president in US history to be impeached by the House of Representatives. He was later acquitted by the Senate. Earlier that summer, Trump… Read More →

Mallory McDonald has her eye on the perfect purse, but it’s too expensive and Mallory’s mom is not buying! So Mallory comes up with the perfect plan to get the perfect purse. She’ll just… Read More →

What is an inclined plane? How do you use a wedge? Using easy-to-understand examples and fun-to-do experiments, discover how these two simple machines work and make the work that you do easier. Read More →

In America, the amount of money people earn for doing the same job isn't always equal. The United States only recently made it illegal to pay men more than women for the same job, and the… Read More →

Did you know that there is a kind of jellyfish that can live forever? Or that pigs can learn to play video games? Test your trivia knowledge and learn loads of incredible facts in this… Read More →

Meet some of the most fascinating insects and arachnids on Earth, and learn about their incredible abilities—from building and weight-lifting to long-distance migration and hunting. Find out… Read More →

Did you know that the longest-ruling monarch's reign lasted for more than 82 years? Or that President Abraham Lincoln used to hide important documents inside his hat? Fun facts like these… Read More →

Did you know that astronauts get taller when they go to outer space? Or that some people can see as many as 100 million colors? Read these fun facts and many more in this incredible,… Read More →

Did you know soccer star Cristiano Ronaldo's legs are insured for about $148 million? Or that Seattle Seahawks fans have cheered so loudly they've actually caused an earthquake? Fun facts… Read More →

Did you know that surgeons who play video games make fewer mistakes? Or that Egyptians were building robots way back in 3,000 BCE? Amazing facts like these await in this page-turning,… Read More →

When babies are born early, they often have trouble surviving. But special containers called incubators help babies grow by keeping them warm and protected. At first, people in the medical… Read More →

When the Indiana Fever drafted superstar Caitlin Clark in 2024, they instantly became one of the WNBA’s most popular teams. Learn about the Fever’s history and meet some of the team’s most… Read More →

On June 15, 2023, Native American Nations celebrated a victory. The Supreme Court of the United States decided to uphold the Indian Child Welfare Act (ICWA), first passed in 1978. The act… Read More →

For thousands of years, Native American peoples have had a deep connection to the land they live on. From cultural burning—setting small controlled fires to improve a habitat—to only taking… Read More →

Indigenous languages have a mixed history in the United States. Many Native languages have become endangered. In the 1800s, the US government began forcing Native children to attend federal… Read More →

Is it a twig? Is it a dead leaf? Is it a bird poop? No! It’s an animal. Discover how animals use mimicry to look like something else and stay safe from predators. After reading, put your… Read More →

Only a few countries were represented by athletes at the first modern Olympic Games in 1896 in Athens. Today, more than 10,000 athletes from over 200 countries compete in the Summer Olympic… Read More →

At the first Winter Games in Chamonix, France in 1924 only a few countries were represented by a dozen or more athletes. Today, about 3,000 athletes from nearly 100 countries compete in the… Read More →

Pack your bags! We’re headed to Indonesia! On this whirl-wind tour, you’ll learn all about the country’s landscape, culture, people, and more. We’ll explore Indonesia’s volcanic islands and… Read More →

What are your best clothes? Where do you wear them? What do people wear at a wedding, a sports game, school, or in the garden? Why do we wear different clothes for different events? When… Read More →