The inspiration for this lesson was Mission 11 from the Life in the Universe curriculum, published by the SETI Institute. The recipe for the nutrient agar came from Biology F.A.Q. at Flinn Scientific. Sterilization tips were found at Science-Projects.com and Wikipedia. Finally, many teaching tips were discovered from Leslie Hathaway’s Bacteria Gathering lesson plan.
Statistics on bacteria in the human body were taken from Wikipedia.
5. Organisms in ecosystems exchange energy and nutrients among themselves and with the environment. As a basis for understanding this concept:
e. Students know the number and types of organisms an ecosystem can support depends on the resources available and on abiotic factors, such as quantities of light and water, a range of temperatures, and soil composition.
1. All living organisms are composed of cells, from just one to many trillions, whose details usually are visible only through a microscope.
Investigation and Experimentation
7. Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other three strands, students should develop their own questions and perform investigations. Students will:
a. Select and use appropriate tools and technology (including calculators, computers, balances, spring scales, microscopes, and binoculars) to perform tests, collect data, and display data.
e. Communicate the steps and results from an investigation in written reports and oral presentations.