ClickScholar Fran recommended this website that offers free, downloadable egg-themed, lesson plans on agriculture and nutrition for grades K-5. Don't miss the Farm-To-Table Virtual Field Trip - just click on the "View Archive" button to start the virtual tour.
You'll find several fun experiments using eggs here - including 'Squeeze an Egg Without Breaking It!" When you get to this site, you'll land on a page that requests you sign up to receive the free newsletter. If you don't want the newsletter, look for the "X" in the bottom right corner of the page - click on it to close the sign-up page and access the experiments.