The following links are very useful in teaching Cell Biology:
This PowerPoint presentation and student note guide handout contains 20 slides introducing Photosynthesis and a 7-page handout for students to fill in during the lecture. I have used it with Freshmen and Sophomore Biology classes. It includes the role of photosynthesis, the conversion of light energy to chemical energy, and producers in our environment. It then describes the overall photosynthesis reaction and the highlights of the light-dependent and light-independent reactions, ending with the Calvin Cycle.
Normally this presentation with class discussion would fill a 90-minute block in my classroom.
This item is available in my TeachersPayTeachers Store: http://www.teacherspayteachers.com/Product/Photosynthesis-Presentation