Environment Change

Hydrangea flowers change color based on the pH of the soil. Pupils analyze soil, an abiotic component of ecosystems. They research the pH of their local soil, record their findings, and then compare them to the pH found on campus.

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Combine activity with agronomy class and introduce types of soil (clay, loam, etc.), local soil types, and plants that grown in those areas
  • Research soil types in other areas of the world
Classroom Considerations

  • Part of activity requires learners to find the pH of their soil in Australia; if not located in Australia, research your area ahead of time and give the information to class members
  • Depending upon level of your class, activity duration may take two to three class periods
  • Appropriate for middle and high school grade levels

  • Hands-on laboratory activity is engaging, especially when outdoors
  • Activity provides links to other related resources 

  • None
Common Core