Building upon the multi-faceted early childhood development benefits of unit block play, each sturdy wooden truck in the Block Science Big Truck series is designed to overlay a lesson on how a simple machine works. This large wooden dump truck uses levers to move the flatbed for loading and unloading Unit Blocks. The Unit Blocks and these accompanying Block Science Big Trucks teach simple machine and STEM concepts while encouraging construction, deconstruction, teamwork, social interaction and self-expression. Dimensions: 5.5"L x 14.75"W x 8.75"H (14cm x 37.5cm x 22.2cm). Suggested Age: 3+.