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Educating for Sustainability


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UNIT: Wastewater Context for Matter and Its Interactions

LESSON: Solubility and the problem with F.O.G

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Part of a series of lessons in a unit called Wastewater Context for Matter and its interactions. Designed for middle school physical science, students will understand the how solubility plays a role in the problems F.O.G. (Fats, Oils and Grease) causes in the wastewater system and what to do about it
LESSON: Solubility and the problem with F.O.G

Lesson Specs

Suitable for Grades

8th Grade
7th Grade
6th Grade

Satisfies Academic Standards: 

MS-PS1-2 - Properties of Substances
OSPI ESE 2: The Natural & Built Environment

Sustainable System Focus:

Buildings and Urban Planning

Academic Subjects


Submitted by:

Jeffrey Burgard

Last Updated:

June 12, 2020 at 7:15:22 PM

Content Connection

Scientific Principle(s)

  1. Solubility is a characteristic property. Whether a solute will dissolve, or how much will dissolve in a particular solvent is characteristic of the solute.



  1. When fats oils and greases are put down the drain, they can cause serious clogging and cleaning issues

Community Relevance

  1. King County and homeowners spend a lot of money a year unclogging fat clogged pipes. Simply changing behaviors can save that money

Lesson Plan


  1. Teacher
  2. Powerpoint - The FOG problem
  3. “Fatberg”Article:



  1. Notebooks


Time needed: 1 class period

  1. Download and share the powerpoint slides with students
  2. Follow the directions in the notes sections for each slide for what to say
  3. Provide a copy of the “Fatberg” Article to each student, have them read it and respond with the following three questions:
  • What surprised you in the article?
  • What did the author assume you knew?
  • What does this make you curious about?

End the class with a discussion around those questions

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