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Igneous rocks, sedimentary rocks, and metamorphic rocks make up the three main types of rocks. But did you know that rocks are constantly being created, destroyed, and created again? Or that rocks are changed by weather, erosion, heat, and pressure? Hear about the rock cycle in action in this fascinating book.

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 start a business! Yet starting a business isn’t as easy as it seems. Mallory finally earns enough to buy what she wants. But if her business is such as success, why does Mallory feel like such a failure?

What if a boxer and a wrestler fought? Who would win? What if a fighter skilled in Brazilian Jiu-Jitsu tangled with a foe trained in traditional judo? These were questions that fans of combat sports asked for years, but how to settle it? The answer: mixed martial arts. In this action-packed book, you'll meet the superstars and record holders of mixed martial arts, get behind-the-scenes details about some of its most dramatic moments, and find out what the future holds for this radical hybrid sport.

Alyssa Duncan is a beast on the soccer field. As the Copperheads' starting goalie, she might be the difference between a state title and total defeat - and she likes it that way. When a concussion takes Alyssa out of the lineup, her rising-star teammate Becca Miller takes over in goal. Becca turns out to be pretty good, too. And what seemed like a temporary change might not be so temporary after all. Will Alyssa heal in time for playoffs? And even if she recovers, what kind of beast will she have to be to knock Becca back to her old position?

¿Qué tienen en común una tortuga marina, una iguana y una pitón? ¡Son todos reptiles! Conozca las características que comparten todos los reptiles.

Strap on your shoes and join Mr. Andre's class on a nature hike! They're out to discover if their class pet, Jojo the gecko, has any traits in common with the plants and animals they see. After watching for patterns in nature, Mr. Andre's students realize that plants, animals, and even humans are different, but they have many things in common!

The prize: $10 million. The rules: Be the first to complete 10 tasks assigned by the Benefactor. Do not ask questions. Do not tell anyone what you're doing. Do not fail. The consequences: Unknown. James' grandpa is dying. An experimental treatment has a chance of saving him, but James' family can't afford it. Not unless James competes in the Contest. The rules are sketchy, and the tasks seem dangerous...and definitely wrong. James has the feeling this contest is about a lot more than the prize money. But he can't back out now - can he?

Cody's basketball team, The Rebels, has an almost perfect record, thanks to the skills of his best friend Jayson "Dominator" Davis. Jayson is new to the team and to the nearly all-white high school. Tension between the coach and Jayson has simmered since he transferred from the inner city. When Coach kicks Jayson off the team, more than the school's record is at stake. A school-wide dispute falls along racial lines, and Cody finds himself at the center. Can Cody step up his game where it really counts?

Deja's mom has never been there when Deja needed her. She's lied, run off, and gotten into trouble with the law more times than anyone can count. She always promises to change - and always breaks those promises. Now - 17 years after Deja was born in prison - her mom is back behind bars and having another baby. Deja agrees to raise baby Heaven until her mother returns home. She's determined to give Heaven the loving family life Deja never had. But being a substitute parent is harder than Deja expected.

When Minecraft creator Markus Persson was young, he wasn't very interested in the games themselves. He was more interested in the programing instructions in the computer's manual. By the time Persson was eight years old, he was writing code for his own computer games. When he was 18, Persson landed his dream job as a video game programmer. In 2009, he designed Minecraft in a single weekend. In the game, players use blocks to build whatever they choose. Persson wanted to let players use their imaginations, and the idea paid off.

Join in the fun as a kid and his bubbe prepare for Shabbat.

Have you ever used your imagination to solve a problem? When Albert Einstein was young, he was fascinated by the way magnetism made a compass work. As an adult, he used thought experiments to solve some of the universe's greatest mysteries. Einstein loved to think about math and science. He worked for a while at a patent office, but his mind wasn't focused on inventions. Instead, he thought about the universe. In 1905, Einstein's Special Theory of Relativity solved questions that scientists had grappled with for hundreds of years.

Life is looking up for Xavier. Things are good with Jennie, his baseball coach believes in him, he's earned the role of closer, and his dad's coming home after serving 10 years. But making up for lost time with his dad doesn't go as Xavier had hoped. It seems his dad's always angry with him. Or drinking. Or out. Or lecturing Xavier on what it means to be a man. When the tension at home builds, Xavier's own hot temper flares, threatening to send him down the same path as his father.

Easter is here! Learn about Easter symbols such as eggs, bunnies, and flowers and the different ways people celebrate this springtime holiday. Listeners are invited to join the holiday fun. Age-appropriate critical thinking questions help build nonfiction learning skills.

What four-legged soldiers fight beside our troops? Military dogs! They can sniff out enemies and find dangerous weapons. These dogs are hardworking members of the military. Learn all about what these amazing animals can do.

Randy prides himself on being all a team captain should be. He expects a lot from himself and from his teammates. But his high standards are challenged when he discovers some players are cheating in school. Although he takes his role as team captain seriously, Randy's worried that exposing the wrongdoing of teammates will put their tournament in jeopardy. Is he ready to take that risk?

Point guard Mercedes Morgan is on track to set the all-state record for three-pointers. She's even caught the attention of a big-time college recruiter. But her sister has fallen in with a gang from the old neighborhood, and a drive-by shooting lands her in a coma. Now their little brother might be headed down the same dangerous path. Can the star player help her family leave the past behind them while also saving her season, or will they always be on guard?

Camila and her brother, Carlos, are going on a road trip with their parents! They're driving all the way from their home in Austin, Texas, to visit their granddad in Louisiana. Along the way, they collect state quarters and learn fun facts about states from Alaska to Rhode Island. Ride along as they discover all the things that make states great!

Alejandro has served six months for trumped-up charges after a brutal encounter with police. Now that he's out, he's determined to break ties with his gang and forge a new path. But it won't be simple. When Alejandro sees a video of a local girl suffering a similar police assault, he knows he has to meet her. The connection between Alejandro and Chrissie is electric. They just want to move forward - together.

The prize: $10 million. The rules: Be the first to complete ten tasks assigned by the Benefactor. Do not ask questions. Do not tell anyone what you're doing. Do not fail. The consequences: Unknown. Maiv is a model daughter, a caring older sister, a top student - the responsible one. She's not someone who'd get mixed up in something as risky as the Contest. But the huge prize would help her afford college and help her family make ends meet. The problem? The Contest is not what it seems. On the other hand, neither is Maiv. She's determined to uncover the Benefactor's secrets.