This week our class is being introduced to food webs, shortly we will be looking at food webs specifically in relation to Antarctica (our current unit of work).
Bill Nye - The Science Guy has a good introduction to foodwebs here (sorry, it wont let me embed) I'd definitely watch this first, it's lots of fun and very well made - first part runs for 8 minutes.
The second part has a good explanation of food webs and pyramids at about 7:50.
In part three there is a good summary that begins at around 2:20.
What is a food web
The Gould League has a simple online Antarctica food web activity here and another one here.
Some other cool food web games can be found here - this one is a little more difficult!
A food-web game not requiring a computer can be found here.
A fun music video about the food web - I dare you to try and sing along!
The Lyrics may look a little mis-spelled here but if you hit the 'view in full screen' button it all comes up perfectly:
Food Web - Lyrics
And a very funny clip about how we are all connected:
For Teachers: Here's a lesson plan about Antarctic Food Webs. There also appears to be alot of science-related Antarctica content on this website!