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Showing posts with label photosynthesis. Show all posts
Showing posts with label photosynthesis. Show all posts

Friday, November 8, 2013

Plant Experiments

"Human nature exists and operates in an environment. And it is not 'in' that environment as coins are in a box, but as a plant is in the sunlight and soil." —John Dewey, Philosopher

Grade Level: Elementary

Experiment 1:


1. Cover a single leaf of a potted plant in tin foil
2. Keep the plant in a sunny place, wait several days
3. Uncover the leaf--look at results, if no results are visual do a starch test (compare to a control sample)

Our hypothesis: We think the leaf will die because it can't get the sun it needs to photosynthesize

Experiment 2:


1. Coat a leaf in Vaseline.
2. Place Vaseline coated leaf in a plastic bag
3. Place another non-Vaseline coated leaf in a plastic bag
4. Wait several days, look for changes

Our hypothesis: The leaf covered in Vaseline will die because it can't get CO2.