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Bubbling Plants

Students learn a simple technique for quantifying the amount of photosynthesis that occurs in a given period of time, using a common water plant (Elodea). They can use this technique to compare the amounts of photosynthesis that occur under conditions of low and high light levels. Before the experiment, students come up with a well-worded hypothesis to be tested. After the experiment, students pool their data to get a large sample size, determine the measures of central tendency of the class data, then graph and interpret the results.

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