Simple Machines Supply List

Gears (Gear Stages)

• Gear factory stages
• Mulitplier stages

Inclined Plane

• 3 boards (12, 24, and 36 inches long)
• Pile of books or support for the boards
• 200 gram weight
• Spring scale or clamp pulley
• Paper or plastic cup
• Gram weights

Levers

• 1 yardstick, cut in half
• 1 pencil
• 3/8" galvanized washers
• Double-sided tape

More Levers!

• 1 ruler
• 1 pencil
• 1 heavy book

Pull Toy

• 2 7/8" diameter dowel rods
• 20' of rope or more

Pulleys

• 1 7/8" diameter dowel rod
• 3 pulleys
• 1 500 gram weight
• 1 spring balance or a pail or cup with gram weights
• Rope

Simple Pulleys

• Broom handle or thick dowel rod
• Rope
• Milk bottle or detergent bottle with handle, filled with water or sand

Skateboards: Simple Machines

• Skateboard
• Group of at least 3 students
• Flat and smooth floor surface

What Do Wedges Do?

• Large box full of uncooked rice
• Rectangular block
• Triangular block
• Pictures of examples of wedges (Bow of a boat, ax splitting wood, knife cutting through cheese or butter, etc.)