Grade 4

History recognizes the leadership and voice Dr. Martin Luther King, Jr. brought to the civil rights movement in 1960s America. A 30-foot tall statue of Dr. King gazes into the future full of… Read More →

Martin Luther King Jr. was an influential and inspiring leader of the Civil Rights Movement in the 1950s and 1960s. His life, work, and death are brought to life for readers like never before. Read More →

Minerals are fascinating resources that have a variety of uses. A diamond is a mineral that is sought after for its beauty. Salt is a useful mineral that adds flavor. But do you know what… Read More →

Did you know that a scientist discovered X-rays by accident? Or that people have been taking pain medicine for more than 5,000 years? Get ready to learn the strange stories behind inventions… Read More →

Ready to make some mouthwatering muffins, breads, and pancakes? You can be the chef with these easy-to-follow recipes, including carrot muffins, chocolaty croissants, easy honey-wheat bread,… Read More →

From an East African village, into the Land of the Dead: Marwe lives in a village where food is scarce. She tries to be obedient, but it’s hard to spend every day working in the fields. When… Read More →

In the early 1800s, very few girls were allowed to learn about science. Yet Mary Anning spent her life hunting for fossils on the cliffs of Lyme Regis, England. When she was still a girl,… Read More →

In the United States, Black men are almost six times more likely to be imprisoned than white men. This disproportionate impact can be traced back to slavery, Jim Crow laws, and the… Read More →

When an abandoned 20-story building needs to be safely demolished and reduced to 80,000 tons of rubble, who do you call? Master blasters! These are the engineers who use precisely placed… Read More →

Shapes, colors, or markings. Some mammals, birds, and fish use unusual camouflage to hide in plain sight. Read More →

An ant hurries over the rocky ground. It pauses beside a dark pebble to clean a bit of dust off its antenna. Unfortunately for the ant, this is the last thing it will ever do. Because what… Read More →

What's that huge dog with the short, coarse coat and mellow personality? It's the mastiff! Mastiffs are gentle giants with a calm and easygoing temperament. Their owners think they are the… Read More →

Have you ever taken something apart to see how it works? As a child, Grace Hopper took apart five alarm clocks in a row, trying to figure out how all the pieces fit together. As an adult, she Read More →

Discover how the rules of math are at work when a basketball drops into a net and when creating a piece of art. Full-color photographs and related age-appropriate math questions engage young… Read More →

Learn about number patterns that exist in a sunflower, the reason behind the hexagonal shape of a honeycomb, and all about the Fibonacci sequence. High impact photographs will draw in young… Read More →

Explore how mathematics has shaped how we look at and understand the world. From figuring out Earth's circumference using geometry to developing load-bearing arches, young readers will be… Read More →

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… Read More →

Math is everywhere when you're traveling! See who's on the move inside this book—and how we need math to finish the trip! You'll need your math smarts to calculate time, distance, and speed,… Read More →

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how… Read More →

Matt Ryan is known for staying cool under pressure. He's been one of the world's best quarterbacks since he started playing for the National Football League (NFL) in 2008. In 2016, he won… Read More →