Education Technology

Earth Science: Freshwater Chemistry
by Texas Instruments - Simulation Lesson


  • Students will investigate and discover relationships among dissolved oxygen levels, pH, and temperature.
  • Students will manipulate the levels of temperature and pH to determine the effects on dissolved oxygen, population and species richness in a freshwater system.


  • dissolved oxygen
  • pH
  • temperature
  • freshwater

About the Lesson

In this lesson, students will:

  • Understand how the temperature of the water affects the dissolved oxygen levels.
  • Determine the best water temperatures and pH levels for freshwater fish population numbers and number of species.