Students identify six different simple machines. They investigate the difference between the ideal and actual mechanical advantage. Students calculate the actual mechanical advantage for several simple machines.

It's time to wake up! Young engineers build an electric circuit that will activate an alarm. The use of switches in the circuit is a must—because you don't want the alarm to keep beeping forever!

In this electric circuit learning exercise, students answer a series of 16 questions about logarithms and how they are used in understanding analog circuits. This learning exercise is printable and the answers are viewed on-line.

Students visit a website that takes them inside of a computer to see how it works. They investigate the people who contributed to computer technology.

Seventh graders examine the job of meteorologists. They decide which characteristics of the atmosphere that meteorologists focus on. They use local weather maps from newspapers to predict weather in their area.

This site includes images of the Antikythera Mechanism, a description of this device and modern-day recreations.

This site contains the history of and a description of the Antikythera Mechanism in written and audio form.

Explore some microcomputing devices and understand their function.

This site describes the history of computer innovations beginning with early mechanical devices to the electronic devices of the 20th century.

This site contains a history of and a variety of links for the Antikythera Mechanism.

This site contains a Wikipedia description of Antikythera mechanism.

This site contains a Wikipedia description of the history of computing hardware.

This site contains a description and images of the Antikythera Mechanism as well as an interactive animation of its functioning.

The difference engine was never built, but its design was an important step in the history of computing devices. This lecture series presents a brief description of this early mechanical computing device.

Simulate the binomial distribution of a Galton board as a ball is dropped into the device. Investigate the probability of the ball going to the right or to the left with each bounce off a peg.