Cal and the Amazing Anti-Gravity Machine by Richard L. Hamilton (Hardcover)

In this wacky, adventurous chapter book, Cal and his grouchy talking dog, Frankie, discover the joys (and pitfalls) of anti-gravity when they join forces with Cal's inventive neighbor, Mr. Frout. This hair-raising adventure is a laugh-out-loud romp that lifts one boy's curiosity about science to a new level!