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**Class Size: **20 to 30 students

**Time:**
30 to 45 minutes

**Objective: **Virginia SOL 3.2

- Students will investigate and understand simple machines

and their uses. Key concepts include: lever, screw, pulley,

wheel and axle, inclined plane, and wedge.

-how simple machines function

-examples of simple machines found in school, home and

work environment.

**Materials: **1. Print out a scavenger
hunt page and photocopy one page

for each group.

2. Print out simple machine cards, pages 1,
2,
3,
4
and 5.

3. Laminate cards and tape them around the room.

4. (Optional) Computer, multimedia projector

**Procedures:** 1. Show the scavenger hunt page to
students and explain

that the goal of the activity is to find examples of simple

machines and fill the scavenger hunt sheet.

2. Students must find 2 examples of levers, 2 wheel and

axles, 1 pulley, 1 wedge, 1 screw, and 1 inclined plane.

In addition, find two examples of objects that are *not*

simple machines and attach them to the back of the sheet.

3. Separate students into groups of 4 or 5. Explain that

one person at a time leaves the group to find an item

for the list.

4. Give students 15 minutes to search for items. Circulate

and help students who are having difficulty.

5. When all groups are finished, have each group stand and

share the simple machines they found. (Optional) - show

the same images from the simple machines main page,

using the answer buttons to illustrate how each one is a

simple machine.