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W 3 Week Plan 4th – 6th Grades ater Quality


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W
3 Week Plan

3rd – 5th Grades
ater Quality



“Protecting our Water”



Activity 5: Who Lives Under the Surface? (Quest) (2 of 3)

Background:

Students can use the information collected from the water sample to make a statement about the quality of the water in the sampling area. The presence or absence of certain organisms, or indicator species, reveals much about the quality of the water.  Some macroinvertebrates are extremely sensitive to changes in water quality and are found in large amounts, in waters that are generally clean, or unpolluted by organic wastes and have more oxygen. Other macroinvertebrates are not sensitive to pollution; therefore if a large number of these organisms are found in a sample, it would serve as an indicator of poor water quality.  Also see the Who Lives Under the Surface Quest for the attached resources and websites with macroinvertebrates keys.



Good Water Quality 

Fair Water Quality 

Poor Water Quality 

Mayfly larvae 

Crayfish

Midge fly larvae 

Caddisfly larvae 

Riffle Beetle - larva

Blackfly larvae 

Stonefly larvae 

Dragonfly

Leeches 

Gilled snails 

Cranefly larvae 

Aquatic worms 

Riffle Beetle - adult

Damselfly 

Lung snails 

Planaria

Scuds 




Water Peeny

Alderfly




Hellgramite

Sowbug







Watersnipe Fly







Whirligig Beetle - larva







Fishfly







Clam or Mussel




(Continued on next page)



Science / Civics


W
3 Week Plan

3rd – 5th Grades
ater Quality



“Protecting our Water”



Activity 5: Who Lives Under the Surface? (Quest) (3 of 3)

Procedure:

Students should obtain a water sample from the designated sampling area.



  1. Have students perform the water quality tests that have been selected as part of the project.  Make sure that the students are comfortable with the testing kits prior to the first sampling experience.  The better the comfort level, usually, the more accurate the results.

  2. Have the students use a dip net or kick net to obtain macroinvertebrate samples from the designated testing area. (Please see the resources in the Who Lives Under the Surface Quest for more information).

  3. Have students compare the results of the chemical and the biological sampling.

 Assessment:

  • Do you think that your water source is a good environment for organisms to survive based on pH levels?  Why or why not?

  • Is there a relationship between turbidity level and the type and variety of organisms observed in the water? If so, describe the relationship.

  • Did any of your results indicate poor or good water quality? If so, which ones? Explain your reasoning.

  • Are any of your results not what you expected them to be? Which ones? Explain your reasoning.

  • Is the water used for drinking water? For recreation? Based on the results of your testing, would you use the water for swimming or recreation? Explain.

* Note: Students can also upload their work and reflections as part of the Who Lives Under the Surface Quest!



Science / Civics


W
3 Week Plan

3rd – 5th Grades
ater Quality



“Protecting our Water”


Activity 6: Interview a Scientist (Quest)





In this activity, students will interview a scientist or adult expert to find out what they know about water quality issues, especially in your area. Students can create a series of questions or use the interview questionnaire in the Interview a Scientist Quest. After, students should write at least 2 paragraphs, or talk about as a class, what they found out during their interview.

Note: As part of a class, it might be easier to compile student questions and have one scientist visit your class with each student then writing up their own reactions to the visit.








Example Interview Questions:

  1. Why did you become a scientist?

  2. What do you do? What are the topics of your research?

  3. What are some of the water quality issues in our country?

  4. What are some of the water quality issues in our community?

  5. What do you think we can do about some of these problems?

  6. How does scientific research help us better understand and deal with some of these problems.

  7. What can I do to help with some of these problems?

Note2: Students can also upload their work and reflections as part of the Interview a Scientist Quest.



Science / Civics


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