Beschreibung:
Character-led stories introduce preschool children to the science of simple machines. Follow the adventures of Screw, Wedge, Ramp, Pulley, Wheel and Lever as they help each other to perform simple tasks.
Character-led stories introduce preschool children to the science of simple machines. Follow the adventures of Screw, Wedge, Ramp, Pulley, Wheel and Lever as they help each other to perform simple tasks.