PreS-Gr 2-Stego Saurus wants a bike but his mother fears he will fall off and hurt himself. She finally gives in and gets him one with training wheels. The other dinosaurs tease him until he takes them off, and, of course, he falls down. The bullies' laughter is silenced, however, as Dinosaur Hill begins to shake and wobble-and is revealed to be the neck of Bronto, an even larger dinosaur who has overhead their conversation and tried to ride his own bike without training wheels. Stego and Bronto make a deal to put their training wheels back on. The final spread shows that Bronto, too, is riding on the back of another dinosaur on a bike, who rides on the back of another, and so on. The plot of this story is rather thin and relies mainly on the layers-of-dinosaurs gimmick; the bullies are never actually dealt with, though presumably they are chastened by Bronto's size. The real attraction here is the whimsical artwork, heavy on shades of green and brown, which brings to life the humorous notion of dinosaurs on wheels.-Kathleen Kelly MacMillan, Maryland School for the Deaf, Columbia Copyright 2004 Reed Business Information.