Complex Machine Contest
  • KELVIN® Chain Reaction Contraption

    KELVIN® Chain Reaction Contraption

    A coin drops into a container in a complex series of chain reaction steps to perform a simple task. The first lever is pulled and activates a second lever, which in turn activates a third lever pulling the magnet away from the steel ball. The steel ball...

    $39.95
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  • KELVIN® Chain Reaction Contraption Bulk Pack

    KELVIN® Chain Reaction Contraption Bulk Pack

    Bulk Pack of 10 - As Low As $29.95 Per Kit! A coin drops into a container in a complex series of chain reaction steps to perform a simple task. The first lever is pulled and activates a second lever, which in turn activates a third lever pulling the...

    $299.95
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  • KELVIN® Mechanical Parts for Complex Machines Team Pack

    KELVIN® Mechanical Parts for Complex Machines Team Pack

    Design and build your own complex machine. Twice the number of parts in this package than the Pack 1 (which includes, but is not limited to: ping pong balls, marbles, dowel rods, string, springs, pulleys, gears, plastic spoons, plastic cups, mouse traps,...

    $48.95
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  • KELVIN® Mechanical Parts for Complex Machines Bulk Pack

    KELVIN® Mechanical Parts for Complex Machines Bulk Pack

    Design and build your own complex machine. Four of Pack 1 (which includes but is not limited to: basic instructions, ping pong balls, marbles, dowel rods, string, springs, pulleys, gears, plastic spoons, plastic cups, mouse traps, balloons, etc.) at a...

    $195.00
    Add to Cart
  • KELVIN® Electronic Parts for Complex Machines Team Pack

    KELVIN® Electronic Parts for Complex Machines Team Pack

    Design and build your own complex machine. The kind of items you'll find in this package include, but are not limited to: switches, wire, sensors, battery holders, buzzer, bulbs, bulb holders, magnetic switches, gearbox kit, etc. Enough for 2 to 4...

    $44.95
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  • KELVIN® Electronic Parts for Complex Machines Bulk Pack

    KELVIN® Electronic Parts for Complex Machines Bulk Pack

    Design and build your own complex machine. Four of the Electronics Team Packs (which includes, but is not limited to: basic instructions, switches, wire, sensors, battery holders, buzzer, bulbs, bulb holders, magnetic switches, gearbox kit, etc.) PLUS a...

    $195.00
    Add to Cart
  • KELVIN® Mechanical Parts for Complex Machines

    KELVIN® Mechanical Parts for Complex Machines

    Design and build your own complex machine. The kind of items you'll find in this package include, but are not limited to: ping pong balls, marbles, dowel rods, string, springs, pulleys, gears, plastic spoons, plastic cups, mouse traps, balloons, etc...

    $24.95
    Add to Cart
  • Rube Goldberg® Inventions

    Rube Goldberg® Inventions

    By Maynard Frank Wolfe. Rube Goldberg is so renowned for his zany and splendidly overcomplicated inventions. This book includes a collection of Rube Goldberg's inventions, comic strips, editorial cartoons, and sketches along with a biography of Rube...

    $35.00
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