Kenzie's super strength makes her a super tumbler. But it causes all sorts of problems on the balance beam. When she doesn't control her strength, she falls off or even worse. If she doesn't learn to control her strength soon, all of her teammates will be laughing and saying one thing: don't break the balance beam!

Jessica Gunderson grew up in the small town of Washburn, North Dakota. She has a bachelor's degree from the University of North Dakota and an MFA in Creative Writing from Minnesota State University, Mankato. She has written more than one hundred books for young readers. Her book President Lincoln's Killer and the America He Left Behind won a 2018 Eureka! Nonfiction Children's Book Silver Award. She currently lives in Madison, Wisconsin.