Lesson Plan

Treatment Plants

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This Treatment Plants lesson plan also includes:

Young scientists explore nature's water treatment plants in this simple science demonstration. By placing a stalk of celery in a cup of water mixed with food coloring, children are able to observe how plants absorb nutrients and contaminants from water, helping to remove harmful impurities.

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas
  • Include this demonstration in a unit on ecosystems, especially wetlands
  • Perform this demonstration during an environmental science unit on water pollution
  • Extend the lesson by testing the effect of different water contaminants on plant life
Classroom Considerations
  • This demonstration will take two days, one for introducing and preparing the the experiment and the second for observing and discussing the results
  • Demonstration assumes children have background knowledge of plant life and the water cycle
  • Provides a clear, easy-to-follow procedure for carrying out the demonstration
  • Offers a field trip idea that extends student learning about water contamination and treatment
  • Includes a series of questions for guiding a discussion based on the demonstration
  • None