T. Rex is on the building siteand has to smash this wall!He needs someone to SWING their tail . . . just like a WRECKING BALL!There's SO much work to be done on the building site, and the dinos need to find a way to SMASH, SHIFT, MIX and LIFT things quickly before the day is over.By pulling the sliding tabs on each page, little ones can help these busy builders use their special dino skills to transform into construction machines and build something roar-some together . . . Featuring fun dino facts on each slider, a rhyming text perfect for little ones to join in with, and friendly illustrations from Damien Barlow, Busy Builders: Dinos at Work is perfect for children who love dinosaurs and diggers!Ideal for fans of Peekaboo Dinosaur, How Toothy is a T.Rex? and Goodnight, Goodnight, Construction Site.