Here is a website with tons of cool trails on land and water for hiking, biking or kayaking! These trails are all over beautiful places in America. Great places to visit if you're roadtripping this summer....
Botany.com: A complete resource for plant and gardening information, an encyclopedia of plants with detailed descriptions and tips for potting, growing, propagation and species varieties
Yoga Postures Step-by-Step is a complete interactive guide to the practice and benefits of Yoga postures featuring animations, photographs, illustrations, articles, tips and tricks.
Here are a bunch of cool patterns to use in the classroom...from candy canes, to flamingos, you can use these cool patterns to decorate and for children's projects! To see a pattern click on the name, and then you can print it out. There are also videos on how to make the patterns.
This Surfrider Foundation link gives ideas to help educate about the importance of beaches. There are experiments and projects for children, which are especially good for a science lesson.