Skip Navigation

How Much Water Do Humans Need?

Author(s): Nancy P. Moreno, PhD, Barbara Z. Tharp, MS, and Judith Dresden, MS.


Have students work in groups of four. Place all materials in a central location for Materials Managers to pickup. 

Each group of students will need a clean, one-gallon milk jug. Ask students them from home.

You also will need beakers or graduated cylinders for this activity. If none are available, you can make your own by calibrating clear plastic cups ahead of time. 

Materials per Student Group

  • 1,000-mL beaker
  • 15-qt dishpan, or a plastic tub with a minimum capacity of 3 liters
  • Plastic funnel, 2 3/4-in. size
  • Plastic milk jug, gallon size
  • 3 liters of water

Funded by the following grant(s)

National Institute of Environmental Health Sciences, NIH

National Institute of Environmental Health Sciences, NIH

The Environment as a Context for Opportunities in Schools
Grant Numbers: 5R25ES010698, R25ES06932

Houston Endowment Inc.

Houston Endowment Inc.

Foundations for the Future: Capitalizing on Technology to Promote Equity, Access and Quality in Elementary Science Education