Technology

How to harness Sun's energy by making a solar concentrator  (M,O)
How to harness Sun's energy by making a solar concentrator 75 rate or flag this pageBy greathubA solar reflector can be made very easily. The beauty of a parabolic reflector is that you can concentrate parallel rays of sun on a particular point. It can be used for various purposes. It has applications in solar cooking, pasteurization and even in air-conditioning(No, this is not a typo). The design I am presenting is very cost-effective.

Free and Easy DIY Parabolic Solar Concentrator Plan  (M,O)
How to make a really hot solar cooker

How to fabricate a hydraulic jack  (M,O)

Greatest Engineering Achievements of the 29th Century  (Y,M,O,T)
Welcome! How many of the 20th century's greatest engineering achievements will you use today? A car? Computer? Telephone? Explore our list of the top 20 achievements and learn how engineering shaped a century and changed the world.

The Lemelson Center  (M,O)
The Study of Invention and Innovation

A Science Odyssey: People and Discoveries:  (M,O)
A databank consisting of 120 entries about 20th century scientists and their stories.

Free Internet Safety Kit  (Y,M,O,T)
Did you know that two in five online teens (42%) said they've posted information about themselves on the Internet so others can see it and contact them? And nearly half of the teen respondents (47%) to a 2005 survey by Teen Research Unlimited admitted that they've used code words to alert others online to a parent's immediate presence--an effort to disguise a conversation about which a guardian might not approve. More than one in four (28%) said they use such lingo daily.In an effort to protect children by informing parents, the Polly Klaas Foundation has created an Internet Safety Kit. When parents obtain the free Internet Safety Kit, they will be offered a free download of Wired with Wisdom ($19.95 value). Wired with Wisdom grew out of the real need many parents express to catch up with their technologically sophisticated children. In this swift-moving online age, parents often feel overwhelmed or under-qualified to address children's Internet habits.Together, the Internet Safety Kit and Wired With Wisdom provide busy parents practical, workable solutions to help manage their family's Internet safety, including email, personal websites, chat rooms, social networking and instant messaging as well as recognizing and avoiding online predators.

How to use Power Point  (Y,M,O,T)
A lesson introducing Power Point and teaching how to make a basic slide show. grades 3-12

Kids and Computers  (Y,O)
Geared to sell their product to teach young children to program. Scroll down the page & you will find useful information on computers for beginners

Dissect a disk  (M,O)
Excellent activity for the kinesthetic learner. Make sure your good disks are locked away before starting this one!

Animated stories using Power Point  (Y)
Combining images and text in Power Point, kids learn to make an animated story. Grades 4-7

My Dream Room  (M)
Integrating budgeting with computers and technology, students use a spreadsheet to plan a $2500 room makeover. Grades 7-8

What color are your Skittles  (M)
Students learn to use a spreadsheet to create charts and use percentages. Grades 5-6

Evaluate Your Site  (M)
A lesson on cyber safety based on evaluating the perpective of a website

MicroWorlds for Munchkins  (Y)
Since the 1960s, Logo was intended to have no threshold and no ceiling. It derives its magic from how little kids and graduate students find the same environment challenging, exciting and expressive. Although a variety of forces have conspired to make MicroWorlds use most common in years five through seven, little kids can use it in quite creative ways. Much has been written about how MicroWorlds can be used to enhance the learning of secondary school concepts. This column makes the case for using MicroWorlds in the lower primary grades.