Engagement: Introduce the students to the two main macronutrients in the Chesapeake Bay soil, phosphorus and nitrogen.  Show different samples that have varying amounts of these nutrients.  Teacher will have to obtain these samples prior to this lesson. Locations can be obtained from the websites listed:
 

http://www.fws.gov/chesapeakebay/nutrient.html

http://www.chesapeakebay.net/nitrogen.aspx?menuitem=19412

http://www.chesapeakebay.net/phosphorus.aspx?menuitem=19424

Exploration: Working in groups of 3-4, students should take a sample of soil from the enclosed space. Teacher should ensure that the samples are taken from the same type of area. For example, if the area includes a pond, samples of one group should not be taken from the soil directly surrounding the water and other samples taken from a dry soil area.  It is suggested that all samples be taken from the area of focus for planting.

Explanation:

   In these groups, students should test for the levels of pH, phosphorous, and nitrogen.  Students should record this data in their journal.  Review results as a class.

  Follow directions as included in test kit. Check with school system for approved venders.  Type of kit should be selected based on required tests.  Kit used for this investigation was Model EL; 5679.

If needed, or preferred, the samples can be sent to a soil testing site; UMass is suggested.
 http://www.umass.edu/plsoils/soiltest/services1.htm

Extension: Have the students collect a sample from home.  Students should bring this sample in, and test levels for pH, phosphorous and nitrogen.

Evaluation: Compare the two.  How are they same/ different?  A Venn Diagram is suggested to guide the student response. Why? Present the information to the class.  Presentations must use two or more visual aids: Pictures, Video, Music, Power Point, Charts/Graphs, Posters, Models, Website.