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Saturday, April 17, 2010

How Windmills & Turbines Generate Electricity

As Earth Day approaches some teachers may be leading lessons about alternative energy sources. One of the more popular alternative energies where I live (Maine, USA) is wind energy. In my home state wind energy has been often discussed over the last couple of years as both an economic development plan and as an emissions reduction plan. Today, while stumbling around YouTube I came across a couple of videos that explain how wind is used to generate electricity.

Here's a short animated explanation of how wind is used to generate electricity.

This subtitled video explains how wind turbines work.

Applications for Education
As mentioned above, teachers who are planning lessons on alternative energy for Earth Day may find these short videos to be good supplements to their lessons. A quick search of YouTube will also lead you to directions for building small windmills and wind turbines. Constructing a small windmill could be a good hands-on project for students to do to experience how a windmill can create electricity.

Here are some related items that may be of interest to you:

Interesting Ways to Use Wallwisher in the Classroom

Yesterday, I shared the story of how I used Wallwisher in my special education classroom. That post generated a lot of views and comments (both on Twitter and in the blog comments). This morning, through Steven Anderson I learned that Tom Barrett has a slideshow about Wallwisher in his Interesting Ways Series. Currently, there are nineteen ideas in the slideshow. If you have more ideas to add, contact Tom Barrett using the contact information in the last slide. The slideshow is embedded below.

Week in Review - Most Popular Items

Good morning from snowy Maine. You read that right, it's snowing on April 17th, such is life in Maine. The upside of an April snowstorm is that I have some extra time for crafting blog posts like this one.

This week Free Technology for Teachers reached a new high for subscriber count. This week Free Technology for Teachers surpassed 21,000 total subscribers via RSS and email. No matter how much that number grows, I'm still amazed that one guy (yes, it's just me writing) sitting on his couch or at his kitchen table can reach that many people. But, it hasn't happened without the help of all of you who have Tweeted, emailed, and shared links with other people. Thank you.

Here are the seven most popular items of the last week:
1. Google Docs Adds Very Useful New Features
2. Wolfram Alpha for Educators - Free Lesson Plans
3. Wiki Mind Map - Visual Webs of Wikipedia Entries
4. 8 Wonders of the Solar System - Interactive Tour
5. Social Web Counter - How Quickly the Web Expands
6. Ning Ends Free Networks - Try These Alternatives
7. Create a Story from Your Search History

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