Teachers graph their data as “reflectance vs. light wavelength” and emphasize that this graph is a reflectance spectrum characteristic of their leaf. Teachers discussed their graphs and talked about any differences due to scales used on the axes or slight variations in leaf colors. They compared their data to the sample in the Vernier teacher's guide that came with the The ALTA® Reflectance Spectrometer.
Photos taken during a teacher workshop at Dyer Observatory July 21, 2008.
When teaching this as part of Astrobiology in the Secondary Classroom (ASC) lessons teachers will encourage their students to discuss how scientists use spectra analysis to search for life in the universe.
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