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pH of Soils and Introduction to Analytical Techniques

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This lesson took place in a 90 minute after school STEM club (could work in 2 - 45 minute class periods). Students may work in small groups of 2-4. An emphasis on sample collection and analytical techniques. Student exploration and different soil types are recommended. Facilitate student reflection on why and how different soils grow different plants.
 

Lesson Grade Level

8th Grade

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In this lesson students explore the relationship between pigmentation and light absorbance. Students will use a spectrophotometer to analyze pigment samples and record the absorption spectrum for