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The ringing notes of an electric guitar, the ripples after you've thrown a rock in the water, even the way a microwave oven cooks your food. These are all examples of what waves can do. A wave is one way that energy travels through space and matter. This...

Sound is more than just the things we hear. It's made up of sound waves or vibrations that travel through air, water, and even solid objects. Readers will learn how sounds are created and about the kinds of sound waves, the properties of sound, and the...

Everything we can see and touch is matter, even things we can't see and touch is matter. We can tell the difference between the different kinds of matter through each one's properties, such as density, magnetism, and conductivity. Knowing about these...

Everything in the universe is on the move! Motion plays a big part in our world, even when we cannot see or feel it. Young readers will discover the laws of motion and learn how they affect everything we do. From the action of sports to the thrill of...

This physical science volume addresses mixtures and solutions and the technology involved with creating and studying them. Readers will learn about the methods that chemistry pioneers used to arrive at an understanding of the nature of mixtures. Readers...

A rainbow is just one example of light in action. Light is a fundamental component of life on Earth, but how does it work? Light is unique in physical science because it doesn't completely conform to either a wave model nor a particle model. Readers will...

Heat is a form of energy that people are very familiar with. Heat makes our homes warm in winter and it helps us prepare food for dinner. Heat can also be dangerous, such as when a fire destroys a home or forest. Readers will learn the physics behind the...

Why do objects fall toward the ground? What makes electric lights go on when we flip a switch? How do magnets work? The answers to these questions and many more become clear when you understand how electromagnetic force and gravitational force operate...

What makes it possible for plants to grow? What makes it possible for you to move your arm to raise your hand in class? What makes it possible for your house's lights to turn on? The answer is energy! Energy is the capacity for doing work. This book...

What happens when you enter a room and flip the light switch? Why does a cell phone battery run down? This book focuses on electricity, electric currents, and electrical technology. Readers will learn where electric currents come from. They'll discover...

Discover the coolest female animals in the natural world with biologist Dr. Carly Anne York. Male lions are often referred to as the "Kings of the Jungle" because they are thought to be the strongest, bravest, and fiercest animals in the world. This is a...

A patterned parade of animals comes to life! What kinds of animals have stripes and why do they have them? With engaging rhymes and bright, bold images, award-winning author-illustrator Susan Stockdale introduces readers to a range of striped animals,...

Counting from one to ten has never been so thrilling in this Ezra Jack Keats New Illustrator Honor Book and recipient of the Mathical Book Prize from Kate Read! One hungry fox with two sly eyes is on the prowl . . . three plump hens had better watch...

While exploring ancient catacombs in Egypt, Reeya Rai and her family discover a chamber hidden behind a large wall of rubble. Inside are several mysterious ancient statues. However, there isn't time to explore the chamber. A large storm is coming that...

Adeline idolizes Gianna, the queen bee of the "in crowd" at her middle school. Desperate for a shot at being popular, Adeline ditches her long-time friends, Emily and Marco. But she soon discovers that fitting in with the cool girls involves going along...

Twins Samantha and Dean are staying at their uncle Aldus's Reptile House in Ravens Pass. Almost immediately, strange things happen. After Uncle Aldus locks the twins in the upstairs apartment, they hear loud footsteps and glass shattering on the first...

Jalen, Mia, Elsie, and Zoe discover a mysterious book that promises to make their wishes come true. The friends joke about what their wishes would be and then forget about the book. But over the next few days, they realize that having wishes come true...

Twins Samantha and Dean are staying at their uncle Aldus's Reptile House in Ravens Pass. Almost immediately, strange things happen. After Uncle Aldus locks the twins in the upstairs apartment, they hear loud footsteps and glass shattering on the first...

Adeline idolizes Gianna, the queen bee of the "in crowd" at her middle school. Desperate for a shot at being popular, Adeline ditches her long-time friends, Emily and Marco. But she soon discovers that fitting in with the cool girls involves going along...

When Batgirl and Supergirl investigate mysterious tremors in Gotham Bay, they dive underwater and discover... Lex Luthor! The crooked businessman is running a mining operation to dig up deep-sea Kryptonite deposits. But as the two friends battle Luthor...

While on the Justice League's orbiting Watchtower, an alert of dual emergencies in Gotham City calls Batgirl and Supergirl into action. They step into the teleporter. In the same moment, something attacks and damages the Watchtower's tech. The two girls...

A seedpod from space has crashed into Gotham City! As its vines grow wild, Batgirl, Supergirl, and Poison Ivy all rush in to investigate. They discover that the plant's roots can't be cut. Its reaching tendrils are super-strong and move with super-speed...

When Harley ruins the Riddler's carefully constructed scheme to capture Batman, she's determined to show the calculating crook that she's no bad-luck jinx. She'll use her brilliantly bonkers mind to write confounding rhymes of her own! In this battle of...

When Gotham City's biggest baddies gather to plan a heist, they tell Harley to go wait with the goons! What?! But the joke is on them after Batman busts in and she sneaks out holding blueprints that show the way to the crooked payday. Can the jilted...

Harley is fed up with receiving zero respect from the Joker, so she decides to become an admired Super Hero instead! Needing some tips in doing good, she partners with a suspicious Batwoman to patrol the streets. Can Harley use her mad skills to crack...

It's Harley's birthday! She's not locked in Arkham Asylum this year, so her wish is for the most spectacular celebration ever. Problem is, her felon friends aren't available to party, and sonic songstress Black Canary keeps crashing her to-do list of fun...

An action-packed graphic novel about Virginia Hall, known as one of the most courageous spies of World War II. In the early 1940s, during World War II, Germany's Nazi regime expanded into neighboring European countries, committing horrific crimes against...

An action-packed graphic novel about Virginia Hall, known as one of the most courageous spies of World War II. In the early 1940s, during World War II, Germany's Nazi regime expanded into neighboring European countries, committing horrific crimes against...

An inspiring graphic novel about Jane Kendeigh, a nurse who helped wounded soldiers in combat zones during World War II. During World War II, the United States' fight against the Japanese on islands in the Pacific was intense and deadly. To help respond...

An inspiring graphic novel about Jane Kendeigh, a nurse who helped wounded soldiers in combat zones during World War II. During World War II, the United States' fight against the Japanese on islands in the Pacific was intense and deadly. To help respond...

An inspiring graphic novel about Elizebeth Friedman, a codebreaking pioneer who changed the course of World War II. Nazi spy rings! No-good gangsters! Shakespearian lies! Discover the courageous woman who cracked all these cases and more--with only a...

An inspiring graphic novel about Elizebeth Friedman, a codebreaking pioneer who changed the course of World War II. Nazi spy rings! No-good gangsters! Shakespearian lies! Discover the courageous woman who cracked all these cases and more--with only a...

Shuri works to improve her tech so she can save the day--and her friends--in this original Marvel chapter book with black-and-white illustrations throughout! Princess Shuri is trying to upgrade her vibranium Kimoyo Beads, but it's harder than she thought...

Ratnip comes snout-to-snout with a monster in this fourth book of the chapter book series from the author of Good Dog. Word on the street is that there's a dumpster monster living in the darkest, gloomiest alley of the City. The monster is bigger than a...

Ratnip goes for the gold in a citywide race in this third book of the chapter book series from the author of Good Dog. Ratnip is entering the City Race, where critters race through the streets by climbing up poles, scurrying along telephone wires, and...

Meet Ratnip, an adorable rat who goes on adventures that are equal parts sweet and icky! In this second book of the new chapter book series from the author of Good Dog, Ratnip searches for pizza on the city streets. What goes together better than rats...

In this first book of the new chapter book series from the author of Good Dog, meet Ratnip, an adorable rat who goes on adventures in the city that are equal parts sweet and icky! Ratnip the rat lives in the City, where there's always plenty of food to...

Now with a reimagined look! Set sail to Atlantis with Tim and his friends in the laugh-out-loud funny, highly illustrated fourth book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart Gibbs. Tim and his...

Now with a reimagined look! Join Tim and his friends on a treacherous journey across the seas in the laugh-out-loud funny, highly illustrated third book of the New York Times bestselling Once Upon a Tim chapter book series from Spy School author Stuart...

Now with a reimagined look! Knight-in-training Tim and his best friend, Belinda, embark on a quest to save Princess Grace in the laugh-out-loud funny, highly illustrated second book of the New York Times bestselling Once Upon a Tim chapter book series...