Its a matter of scale: How big is a coffee bean compared to a carbon atom

http://learn.genetics.utah.edu/content/begin/cells/scale/

This page allows you to view a coffee bean and then zoom in to compare the size of other sized organisms and particles.

For more genetics links, go to their main page at http://learn.genetics.utah.edu/.

International Childrens' Digital Library

http://en.childrenslibrary.org/index.shtml

The goal of this project is to:

To create a collection of more than 10,000 books in at least 100 languages that is freely available to children, teachers, librarians, parents, and scholars throughout the world via the Internet. The materials included in the collection reflect similarities and differences in cultures, societies, interests, lifestyles, and priorities of peoples around the world. The collection's focus is on identifying materials that help children to understand the world around them and the global society in which they live. It is hoped that through a greater understanding of one another that tolerance and acceptance can be achieved.

9 Sources of Content for Your iPod Learning Mix

1. Quick and Dirty Tips: Probably best known for the Grammar Girl podcast, Quick and Dirty Tips offers short and snappy content on a range of other topics, like nutrition, public speaking, investing, and even dog training.
2. LearnOutLoud: I’ve been a fan of The Philosophy Podcast for a while now, but LearnOutLoud has a lot more to offer. In fact, the site claims to have “the Internet’s first directory for podcasts you can learn from.” LearnOutLoud also has a great selection of learning resources for kids.
3. MindBites: This company’s site offers a large and growing collection of video “instructionals” on topics ranging from sewing to calculus to baby sign language.
4. Radio Lingua Network: Radio Lingua offers the popular Coffee Break Spanish and Coffee Break French podcast series as well as “My Daily Phrase” and “One Minute” podcasts for a number of other languages.
5. iTunes U (Opens in iTunes: iTunes U is the place for great free content from top universities and other educational institutions. Apple claims there are more than 200,000 educational audio and video files available. Here are direct links to a few of the participating institutions and organizations. (You will have to have iTunes installed for these to work):
   

   Carnegie Melon
   University of Oxford
   Open University
   Stanford University
   Edutopia
   Teacher’s Domain (WGBH/PBS)

6. Education Podcast Network: The Education Podcast Network bills itself as “an effort to bring together into one place, the wide range of podcast programming that may be helpful to teachers looking for content to teach with and about, and to explore issues of teaching and learning in the 21st century.”
7. The Naked Scientists: The Naked Scientists is a site you will want to subscribe to if you are at all interested in science. A project of the BBC, it offers up a continuing stream of interviews with famous scientists along with news and information about science, medicine and technology.
8. Librivox: Librivox is the source for free audio book content on the Web, and it offers a variety of podcast options. You can pull pretty much any audio book on the site into your iPod, or try out one of these five channels for an automated stream of content:
   

   LibriVox Books Podcast
   LibriVox Community Podcast
   LibriVox Poetry Podcast
   LibriVox Short Story Podcast
   LibriVox New Releases Podcast

9. TED Talks: I’m continually amazed at the stream of high quality content coming out of the Technology, Entertainment, and Design conference. The Web site is very popular, but you might not be aware that you can subscribe to both a video and an audio version of TED talks through iTunes.

A Maths Dictionary for Kids

Check out this flash-based dictionary of math terms. This Australian site contains some good illustrations and activities.

http://www.teachers.ash.org.au/jeather/maths/dictionary.html