<<< Chemistry
Salt, the Essence of Life: A Multidisciplinary Curriculum for Students  
Salt, sodium chloride, can be used to teach many subjects. The Salt Institute has prepared this high school curriculum for teachers, but students can use it independently.
Dow/NSTA Lesson Plans  
Plans produced by chemistry teachers during summer internships at Dow Chemical.
Chemistry I Index  
Chemistry I resources, mainly demonstrations and labs. Includes some teaching tips, exercises and handouts.
Chemistry II Index  
Chemistry II resources, mostly labs.
Chem Exam Page  
Not exactly lesson plans, but there are nearly forty chemistry exams and quizzes available for download in pdf format.
Lesson Plans - Chemistry  
A number of lesson plans in chemistry. Of more use are the links on the left of the page linking to material related to the plan topics.
Chemistry Lesson Plans  
Some of these are more appropriate for demonstrations, but there are over 40 links to chemistry lessons here.
Chemistry Lesson Plans, from the SMILE Project  
About 200 lesson plans.