Presented here in sturdy books overflowing with both fun and solid information are two of children's favourite heavy machines: an aeroplane and a digger. What better way to prepare children for a first plane ride than with a highly interactive and reassuring look at a jet plane? And how much more fun children will find viewing a construction site, knowing how a digger works from shovel to gearshift and dipstick to wheels. Using the interactive features in these books, children will gain an immediate understanding of the inner workings of these massive machines.