The Quantum Backpack: A Middle School Sci-Fi Adventure Books for Kids Ages 9-12 (Paperback) (ISBN-13: 9798177187730)

Ten-year-old Leo Park is on the verge of failing fifth-grade science. But when a chaotic bus mix-up leaves him with a mysterious black canvas bag, Leo discovers three high-tech gadgets that shouldn't exist in 2026: a gravity-reversing stylus, a kinetic polarity ring, and a brass cylinder that can literally pause time.

At first, cheating a science test seems like a dream come true. But when the time-pausing gadget glitches into an infinite 10-second loop-and a mysterious tracker named Unit-84 arrives to reclaim the tech-Leo and his tech-savvy best friend, Maya, are pushed to their limits.

To break the temporal glitch, save their classmates from a total memory wipe, and survive the ultimate rooftop confrontation, Leo and Maya must stop relying on shortcuts and use real science, math ratios, and critical thinking before the timeline is destroyed forever!