• Grades: 4+
• Activity Guide PDF
• NGSS Alignment PDF

What kind of contraption will you build? Crazy Contraptions is a thought provoking activity that engages students in the design and construction of exciting and innovative Rube Goldberg style mechanisms. The comprehensive Crazy Contraptions Activity Guide facilitates the conceptualization, understanding and application of simple and complex machines. Utilize the template for a standard frame on chipboard or another surface, or set your contraption on a 12"x12" wood base with drilled slots, perfect for connector strips.

• 160 - Connector Strips
• 11 - Marbles
• 10 - 70mm Pulleys
• 10 - 55.5mm Pulleys
• 10 - 25.5mm Pulleys
• 10 - 9mm Pulleys
• 10 - 50 Tooth Gears
• 10 - 40 Tooth Gears
• 10 - 20 Tooth Gears
• 10 - 10 Tooth Gears
• 10 - Toy Cars
• 20 - Portion Cups
• 50 - Chipboard Sheets
• 4 - Wire Rolls
• 5 - Slide-Stop Materials
• 100 - Perpendicular Blocks
• 100 - Dowels
• 20 - Basswood Strips
• 40 - Angle Brackets
• 200 - 1" Screws
• 200 - Hex Nuts
• 50 - Rubber Bands
• 60 - Stop Clips