Hands-on introduction for children ages 8-11 to the simple machines area of gears with focus on gearing, change of direction and compound gearing. 67 elements include assorted gear wheels, axles and beams. 2 full-color building instructions, non-text. A storage box with sorting tray and lid. Benefits for the Teacher: Simple and in-depth introduction to gears. Efficient classroom management. Short preparation time. Benefits for the Pupil: Free, open-ended activities. 67 piece set.