Capstone Press Jessica and Jed are hoping to ride in Uncle Sam's tank. But when they go to visit him, they discover it doesn't work. In fact, it's in pieces! Luckily, Uncle Sam knows how to repair the tank. Join them in their quest to rebuild the tank, and along the way discover the science of the machine and what makes it work. This book is written in comic book format and pictures show how machines work.
Baker & Taylor Jed and Jessica learn about how engines and tanks work when they help their Uncle Sam restore an old tank so that it may be put into a museum, in a story that is told in graphic novel format.