Lots of photosynthesis help!
http://www.phschool.com/science/biology_place/biocoach/photosynth/intro.html
http://www.mrothery.co.uk/photosynthesis/photosynth&respnotes1.htm
http://lifeofplant.blogspot.com.es/2011/10/calvin-cycle.html
and more... try these questions
http://www.biology.arizona.edu/biochemistry/problem_sets/photosynthesis_1/photosynthesis_1.html