This is a fantastic site for science projects, as well as guides for teachers on topics such as how to use a microscope. This site also offers products for sale for your science classroom, but the project ideas and printables are free. It is very user friendly, broken down by age group (students k-12 are covered), and discipline (Life Science, Physics, etc.). I would use this to begin researching something I haven't taught before to look for inspiration and supplemental material.
As technology in schools continues to advance, teachers must be on the lookout for ways to integrate new technology into the classroom. This website overviews 30 science apps for IPad covering topics such as physics, chemistry, anatomy, geology, weather and the solar system among many others. Most are free, but some charge a small fee and would be suited to many grade levels, at least grades 3-12. I would use to introduce or supplement a lesson, but could also see this as a treat for kids ready to work ahead.
This site is an accompaniment to a children's show on PBS called Zoom. The webpage provides tons of science projects for kids, some of them in printable form for educators to use in class, that ask students to consider their discoveries without flat out telling them what they're supposed to be learning. There's a link for parents and educators as well. Free, and fantastic supplemental materials for elementary school kids.
This site has activiites and lesson plan supplements, including interactive games that students can play. There are kid-friendly articles, in English and Spanish, and also a resource library for teachers. This website is free and the activities are geared toward grades 4-8. I would definitely look here for fun extras to supplement my lesson plans.
A great collection for K-8 teachers of free resources for experiments, lesson ideas and supplemental information. I would use this as a starting block to research different ideas to supplement my lesson plan...it really is the "trunk of the tree"...so many links to get you to what you're looking for.
Loads of good info on this free Library of Congress website, including a page on how to get girls interested in science. There are books, activities and internet resources attached to this page, and I think educators could find this useful at all grade levels to get girls excited about science.
Located in Makanda, Illinois, Touch of Nature has an Environmental Education program that, "offers exciting outdoor learning experiences in natural resource education, nature interpretation and resource management. Courses are designed to increase environment awareness, appreciation and stewardship. The do offer lodging (for a fee) to take older students for a fun learning experience. I don't think it's ever too early to get kids thinking about how they effect the environment so if I were in a school close to Makanda, I would take students as early as 3rd grade, however this would be an extremely cool field trip for grades 8 and up.
Mainly classroom supplemental materials for sale, but all are produced by ABC and Disney, so quality of materials is terrific. Materials available for all grade levels. If you dig around the site, there are free science demos by Bill Nye the Science Guy.
Second grade teacher blog...scroll to September 10 and there is and entry for Common Core Science Incorporated. There is a nice overview of integrating science with other subjects.