This set provides hands-on learning about single and separate axles, steering, rollers, winch handles and friction. Wheels and Axles Mini Set is designed to be used by students working in pairs. It includes: 2 building cards with pictorial instructions * Sturdy plastic storage case with clear compartmentalized tray * Pictorial parts list to make cleanup and inventory simple. Class Pack: Hands-on learning for 24 students (working in pairs) with teacher support materials are included in this convenient pack. * 12 Wheels & Axles Mini Sets (779616) * 20-page Teacher Guide (779626) * Individual storage case with each set. Teacher Guide: This 20 page guide contains 10 lesson plans, introductory activities, and problem-solving activities based on wheel & axle concepts. Also contains: Photographs of everyday devices that use wheels and axles * Suggested problem solutions * Assessment ideas.