A series of worksheets that helps students identify simple machines and the work they do.

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Machines help make work easier for us, hence the word "simple". There are six simple machines. Levers are long pieces of material that form a see-saw to help us lift objects. A pulley is basically a wheel that has a rope going over it to help reduce the weight of lifting something. A ramp is an inclined plane. Inclined planes allow us to move things up vertically slower and requiring a little less force. When you smack two inclined planes together in the opposite direction you get a wedge. Wedges can be used to separate and hold things in place. Second only to fire, the wheel and axle allows us to transport things long distances. Screws are meant for holding things together they also can be used to open up areas.

The worksheet set starts by having students understand to identify various simple machines. We then advanced to identify how these tools are embedded in a more complex machine like a bicycle. We finish by having students quantify the advantage that simple machines give us.

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Real World Examples of Levers

Provide the classification (i.e, first, second or third) for each of the levers shown below.

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Using Inclined Planes

A useful kind of simple machine is an inclined plane and some of these are further classified as wedges and screws.

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Smaller Parts in a Bike

A bicycle is collection of many smaller machines working together. Provide labels for each of the simple machines you can identify in the diagram of a bicycle below.

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Compound Machines

A compound machine is what we call a machine that is a combination of two or more simple machines.

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Identify That Machines

Provide the names of the type of tool that is shown in the pictures.

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Classes of Levers

For the levers shown in the pictures, classify each as a first, second or third class lever.

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Mechanical Advantage

Machines reduce the force needed to perform work and in doing so create a "mechanical advantage" represented by the formula in the box?

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Efficiency of Machines

Because machines lose work due to friction, the amount of work obtained from a machine is always less than the amount of work put into it.

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