Science: How does photosynthesis work in plants?

This educational video does a great job explaining how plants take in sunlight and convert it into energy and food.

Subject: biology
Grade level: 8-12
Length:  4:52

Science: What is photosynthesis?

This video discusses the questions, "What is photosynthesis?"  It is done using rap which I am not a big fan of, but its descriptions of photosynthesis and the visuals it uses are really good.

Subject:  Life Science
Grade Level:  7-12
Length:  3:21