This project requires the student to determine at least three high-traffic areas in their schools to test for germs. After the student selects these areas, such as door handles, water fountains or computer keywords, he uses cotton swabs to collect samples. Once the samples are collected, he examine the amount of germs found by preparing cultures with agar and petri dishes. Based on the growth of the bacteria in the petri dish, he determines which high-traffic areas in the school possess the most germs.
The student determines what plant to use to test acid rain and its affect on the plant. She'll grow one plant without being treated with acid rain. She'll then treat at least three plants with varying concentrations of acid rain, by diluting collected rainwater with different amounts of distilled water. The end product focuses on monitoring each plants' growth.
A student selects at least three types of foods, with sugary, salty and bland tastes, for a group of volunteers to eat. Before giving the volunteers the selected foods, he must measure the heart rate of each volunteer. After providing a food sample, the student wait for 30 minutes before measuring the volunteers' heart rates. He'll need to test the volunteers at least three times to get a good range of results. After the data is collected, the student will be able to determine if food affects the heart rate.
This project requires the student to select at least three fertilizer brands to test on a selected plant. She'll have one plant that isn't treated by fertilizer to compare against plants that will be treated. The student will apply fertilizer to each plant, following manufacturer guidelines, to determine if any specific brand helps the plant grow at a faster rate.