Science Venture July 16, 2020 Grade 5, Grade 6, Grade 7, Grade 8, Grade 9 Floating Leaf Discs Science Venture July 16, 2020 Grade 5, Grade 6, Grade 7, Grade 8, Grade 9 See photosynthesis in action. Try this experiment and test out how different variables affect the rate of photosynthesis. Floating Leaf Disks Activity Here