NSTA: Science Objects, 9-12

http://learningcenter.nsta.org/products/science_objects.aspx
The National Science Teachers Association provides free web-based science learning activities for teachers to build content knowledge. This is a great resource for teachers who are new to the teaching profession or just need to brush up on science concepts before taking on a new course. The Science Objects are interactive multimedia lessons based on science literacy goals in the Standards and include interactive simulations, audio, questions to ensure understanding, student misconceptions to watch out for, and practical ideas for addressing them. Each Object covers a key content idea such as Newton’s First Law, global climate patterns, origin and evolution of the universe, and Mendel’s principles of heredity. Browse the content by following the links in the left menu to each of the four categories: All Science Objects, Earth and Space Science, Physical Science, and Life Science.