QR Challenge: Water Pollution and Sewage Treatment Review

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. Which step in the treatment of waste water uses bacteria or other microorganisms to consume the organic material?	uu
2. What is an example of non-point source pollution?	pppp
3. What happens to the amount of dissolved oxygen when organic waste is added to water?	jjjjj
4. What is an example of point source pollution?	hhhh
5. What is the largest use of water in US homes?	hhhh
6. What are the effects of thermal pollution?	hhh
7. What happens to dissolved oxygen levels as temperatures decrease?	hhh
8. What is Biological Oxygen Demand? When would it be high?	ll
9. What is sludge?	kk
10. What type of country would have a high rate of disease causing water pollution?	jj
11. What is the most common type of oxygen demanding waste?	hh
12. What is an example of an inorganic water pollutant	hh?
13. What does fecal coliform tell scientists?	ll
14. Is fecal coliform harmful to humans?	ll
15. What is an example of something that would cause sediment pollution?	ll
16. What is one environmental effect of sediment pollution on an ecosystem?	ll
17. What is a HAB?	ll
18. What type of process is primary sewage treatment and what does it remove from the water?	k
19. What type of process is secondary sewage treatment and what does it remove from the water?	J
20. What does tertiary sewage treatment remove from sewage water?	k
21. Explain why a community may plant an artificial wetland.	l
22. Does San Antonio have tertiary sewage treatment?	k

 

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