Visit the Inventor’s Toolbox and Simple Machines websites to learn more about simple machines. Be sure to look for parts found on your group’s device.

Check in with your teacher before continuing.

Go to Gadget Anatomy to see if you can identify the simple machines used in a few everyday devices.

Now visit the How Stuff Works website and search for devices with elements that are similar to your group's device. Choose one device and respond to these questions.

Check in with your teacher before continuing.

Designing Systems
Now that you have designed a system using various parts, complete a journal entry that includes the following components:

• Document/show notes on the development process
• Sketch the final design
• Label the essential parts
• Write about any challenges you faced during the process
• Write about any improvements you would make if you had access to unlimited materials

Look around your house for devices/machines that have the essential parts you learned about in this lesson. Sketch and label them in your science journal.