Khan Academy
Khan Academy: Electrical Engineering: Amplifiers
Amplifiers make signals bigger. Amplification is often the most basic operation of an electronic circuit. There are many kinds of amplifier designs. We will describe the operational amplifier, the building block of most analog electronics.
Technovation
Curiosity Machine: Challenges: Engineer an Electric Switch
Using your knowledge of the flow of electricity, do you think you could build a switch that can complete a circuit to turn on an LED? This site contains the challenge, tips, a lesson plan, and a place for students to document their...
TeachEngineering
Teach Engineering: Ohm's Law I
Students will work to increase the intensity of a light bulb by testing batteries in series and parallel circuits. It analyzes Ohm's Law, power, parallel and series circuits, and ways to measure voltage and current.
Science Buddies
Science Buddies: Go, Gadget, Go! Building Robots With Lego Mindstorms
In the mid-20th century, people thought of robots as futuristic tools. But in the 21st century, robots are not a figment of our imaginations, but are a part of our reality. Robots even perform tasks that humans can't do. In this...
TeachEngineering
Teach Engineering: Wind Power!
Students learn how engineers transform wind energy into electrical energy by building their own miniature wind turbines and measuring the electrical current it produces. They explore how design and position affect the electrical energy...
NC State University
The Engineering Place: Battery Making
Using simple materials, students will learn how to create batteries, and about the relationship between voltage and current.
Science Buddies
Science Buddies: Waste Not, Want Not: Use the Microbial Fuel Cell to Create Elec
Gross. What is that in the toilet? But maybe it's not just gross. Did you know there are bacteria that digest organic waste and create electrons? What if there was a way to collect those electrons to power a circuit? In this science fair...
TeachEngineering
Teach Engineering: What Is Energy?
With an introduction to the ideas of energy, students discuss specific types of energy and the practical sources of energy. Hands-on activities help them identify types of energy in their surroundings and enhance their understanding of...
Technovation
Curiosity Machine: Challenges: Build a Hydroelectric Waterwheel
Can you generate electricity from the flow of water by designing a waterwheel? In this challenge, students will be using everyday objects to create their waterwheel. This site contains a lesson plan, tips, and a place for students to...