Wikimedia
Wikipedia: Hydroponics
Have you ever wanted to grow plants without soil? This site will give you seven techniques to do just this. Additionally, learn about the history of hydroponics, problems associated with hydroponics, and possible future uses.
Alabama Learning Exchange
Alex: Where Is the Dirt? A Lesson in Hydroponics
This lesson plan will be developed around hydroponic gardening, the growing of plants without soil. Using the Internet, students will research hydroponics and share their knowledge with the class. A classroom hydroponic garden will be...