Class Presentations
Video Presentation
Here is a site from called "Educator": It contains 34 AP lectures provide a large introduction to the subject of chemistry
Obviously, you are going to be drawing primarily from your textbook which will be aligned to curriculum standards.
What is perhaps more challenging is finding appropriate lab exercises for students.
Chemistry Labs:
This link leads laboratory lab that are/can be formatted for use: Chem Labs Tab.
https://sites.google.com/site/chemscoop/chem-labs
What about answering the big questions? Demonstration from MIT: Money to Burn.
Chemistry Lesson Plan Sites
A few places with lesson plans for chemistry.
The Science Spot
American Association of Science Teachers
Teachers Network
Here are links to lots of science lessons, but not all are 9-12 science, not restricted to chemistry
This is a link to Lesson Planet. One advantage is that the lessons have been rated by teachers.
The MacMillan publishing site has some chemistry lesson plans here... Choose chemistry.