This website has over 6800 science lessons searchable by topic.
Lesson Plan Websites
Here is a comprehensive list of websites with science lesson plans for teachers. If you know of any others please email email@example.com.
Click on the Professional Stuff link, and then Science Teacher Demos.
The lab of Mr. Q provides a wealth of science resources and opportunities for homeschool families, public school students and educators. Be certain to sign up for the free "LabNotes" that are delivered monthly. You will not be disappointed.
Classroom activities for Grades 5-12