Making a Water Sampler
This lesson developed by Reach
How can we explore ponds, lakes, rivers, or streams?
Concepts: Water sampling
- Following directions
Each water sampler requires:
- 1/2-gallon plastic milk jug
- Rubber stopper or cork
- Eyebolt, nut and 2 washers
- 1/8 inch diameter rope
- Magnifiying glass, microscope
Room Preparation: Need space to assemble water sampler
Safety Precautions: Suggest an adult drill holes through rubber
stoppers or corks
Procedures and Activity
Ask what a water sampler is and why we might use one to explore ponds,
lakes, rivers, or streams. What might we find?
Individuals or partners make a water sampler.
- Put an eyebolt, with a washer on top, through the rubber stopper or
- Tighten the eyebolt with the nut and washer on the bottom.
- Tie a brick to the handle of the jug with heavy rope to lower and
anchor the jug in water.
- Tie the stopper or cork to the handles of the jug with twine (give a
little slack). Allow enough twine for the jug to be lowered to the depth
of water to be sampled.
- Place stopper or cork firmly in jug.
- To use, lower the twine to the desired depth. Jerk to remove the
stopper or cork from the jug.
- Let jug fill up with water.
- Bring up jug.
- Observe what you have with your eyes, magnifying glass, and microscope.
Closing - Original Question
Ask again, “How can I explore ponds, lakes, rivers, or streams?“
Have students describe the steps and the process used to make water
How might water samplers be useful?
What do you think we might find?
Plan an outing to use water samplers. Collect water and put rubber stopper
or cork back in jug to contain water. Have students observe using just
their eyes, using a magnifying glass, and then samples of water under a
Careers Related to Lesson Topic
- Civil and Environmental Engineers
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Project Grow, Ann Arbor
- Sanitation Superintendents
- City of Pontiac Collier Road Landfill
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