1. Dihydrogen Monoxide
(DHMO)

2. (notes, title = “Dihydrogen monoxide”)
DO NOW: Answer these 1. Why is it important to know about the chemicals you are exposed to? 2. Why is it important to have evidence to support your claims?
(notes, title = “Dihydrogen monoxide”)
5 minutes
End

3. Should we ban DHMO?
A – Yes! B – No! C – I need more information D – I have a different suggestion

4. What do we need to know about DHMO?
3. Write down as many questions as you can that will help you decide whether or not to ban DHMO.
Choose 1-2 question(s) for your group
to put up on the board, and send
one student up to do so.
5 minutes
End

5. Find EVIDENCE from the reading
4. What is DHMO? (1 sentence in your own words)
For the next 3 questions, choose the bulletpoints that are most concerning, relevant, or interesting to you:
List 3-5 ways DHMO is harmful
List 3-5 ways DHMO used
List 3-5 ways we are exposed to DHMO
What kind of regulations (laws) would you want put in place for human safety, and why?
5pt. Extra Credit Mini Poster (8.5”x11”)
Use visuals, text, and color to spread awareness about DHMO and to convince the viewer of your position (due no later than Monday)

6. Practicing Evidence Based Writing
CLAIM
People should be concerned about the dangers of DHMO
EVIDENCE 1
Quote from dhmo.org handout
REASONING 1
Explain how EVIDENCE 1 shows that DHMO is harmful or why we should be concerned
EVIDENCE 2
REASONING 2
EVIDENCE 3
REASONING 3
CONCLUSION
What should we do, now that we know this?
Practicing Evidence
Based Writing
For the purposes of this
writing practice, please use
this claim, even if you don’t
Agree with it.
Note: evidence = concrete detail, and reasoning = commentary

7. DO NOW:
Make sure your DHMO miniposter has your name/date/period on the back and post it to the whiteboard with a magnet
Take out your dihydrogen monoxide notes

8. 9. What is the chemical formula for Dihydrogen Monoxide?
(Add to your DHMO notes)
9. What is the chemical formula for
Dihydrogen Monoxide?
Hint:
Carbon Dioxide = CO2
↑Di = 2 Oxygens
Carbon Monoxide = CO
↑Mono = 1 Oxygen

9. Penn and Teller: Petition to ban water

13. The Food Babe Eating Guide
Subway Will Remove Yoga Mat Chemical From Bread
You Won't Believe Where Silly Putty Is Hiding In Your Food!

14. DHMO is dangerous, and we should be concerned about it.
CLAIM
DHMO is dangerous, and we should be concerned about it.
We shouldn’t worry about the dangers of water in daily life.
EVIDENCE 1
Quote from dhmo.org handouts
 use same evidence for both sides
REASONING 1
Explain how EVIDENCE 1 shows that DHMO is dangerous or why we should be concerned
Explain why EVIDENCE 1 shouldn’t be a concern in daily life.
EVIDENCE 2
REASONING 2
EVIDENCE 3
REASONING 3
Concluding Statement
What should we do, now that we know this?
What should we do (or not do), now that we know this?

16. 10. Why is it important to provide “reasoning” to explain how the evidence supports the claim? (Why isn’t the evidence enough on its own?)
11. How concerned were you about DHMO by the end of the first lesson (explain your thoughts)? How do you feel about this lesson now?
12. What did you learn? Why do you think Mr. Warren wanted you to go through this experience?
13. The next time you are told about the dangers of a certain chemical what new, more-specific questions will you ask?