Spin BEEP BEEP Robot's colorful gears and learn all about how gears connect and help machines move in this innovative novelty book with adorable rhyming text. With seven spinning wheels that connect to and spin one another, this unique book acts as a young child's interactive entree into the world of engineering while still being a fun, young read aloud. BEEP BEEP Robot! Off we go!Gears move fast and gears move slow. Turn my gear to start the show.How does purple make green go? Gears have teeth that fit in grooves.Watch me spin. Check out my moves! Turn my gear to start the show.How does yellow make green go?