KELVIN® Cranes & Catapults
  • KELVIN® Mousetrap Catapult Kit

    KELVIN® Mousetrap Catapult Kit

    KELVIN® once again uses the kinetic energy of a mousetrap in a unique way. Have your students build our mousetrap powered catapult and send ping pong balls safely flying into the air. The catapult allows the students to adjust the length of the lever...

    $11.95
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  • KELVIN® Mousetrap Catapult Bulk Pack

    KELVIN® Mousetrap Catapult Bulk Pack

    Bulk Pack of 10 - As Low As $8.99 Per Kit! KELVIN® once again uses the kinetic energy of a mousetrap in a unique way. Have your students build our mousetrap powered catapult and send ping pong balls safely flying into the air. The catapult allows the...

    $89.95
    Add to Cart
  • KELVIN® Mousetrap Catapult Class Pack

    KELVIN® Mousetrap Catapult Class Pack

    Class Pack of 20 - As Low As $8.49 Per Kit! KELVIN® once again uses the kinetic energy of a mousetrap in a unique way. Have your students build our mousetrap powered catapult and send ping pong balls safely flying into the air. The catapult allows...

    $169.95
    Add to Cart
  • KELVIN® Trebuchet Kit

    KELVIN® Trebuchet Kit

    Plans are included in this kit for a miniature trebuchet that can launch a small object across the room. Students can alter the design or use the materials to create an original. This kit depicts another engine of war from Medieval times. Includes 24"...

    $15.95
    Add to Cart
  • KELVIN® Trebuchet Bulk Pack

    KELVIN® Trebuchet Bulk Pack

    Bulk Pack of 10 - As Low As $13.50 Per Kit! Plans are included for a miniature trebuchet that can launch a small object across the room. Students can alter the design or use the materials to create an original. This design depicts another engine of war...

    $135.00
    Add to Cart
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