The Stacking Crane Teaches children size comparison and rewards them for stacking the crane in the right order. Simply stand the pieces from biggest to smallest, and the construction foreman can load the ball and watch it roll through the translucent pieces until it drops down the slide and into the waiting Dump Truck. Included 3 cups for stacking and nesting. Included 1 piece Volvo dump truck. Develops: Logical thinking, Hand-eye coordination, Cause and effect Crane approximately 43.1cm tall Vehicle approximately 8cm long