1 carbon! nobody knows what it is. do now: card sorting activity worksheet please take a pencil...
TRANSCRIPT
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Carbon! Nobody knows what it is.
Do Now:
• Card Sorting Activity worksheet
• Please take a pencil (that you can keep!), worksheet, and a set of cards
• Feel free to work with your neighbors
• Example:
Potato French Fry
Carbon! Nobody knows what it is.
Cindy ValenciaCalifornia Academy of Sciences
Renny TalianchichCalifornia Academy of Sciences
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Findings and Misconceptions
• What is carbon?
• Carbon dioxide is bad air or pollution that comes out of cars.
• Carbon dioxide is the same as air.
• Carbon dioxide is a gas, we put gas in our cars.
• Groups didn’t see the relationship between plants and fossil fuels.
• A tentative connection was carbon to carbon dioxide.
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CO2 into Plants: A Skit
• 4 groups connected CO2 to plants.
• 3 groups connected CO2 to leaves.
Teaching Goals
• Carbon is in plants.
• Carbon can come from CO2.
• Plants use carbon as a building block.
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Fossil Fuel Formation
• Out of the ten groups, only one group made the connection between plants and fossil fuels.
• Carbon was a mystery to many students.
• What is carbon?
• Is it a gas?
• What does it look like?
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What happens to the carbon when a plant dies?
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C
C
C
C
1010
C
CC
C C
C
C C
C C
C
C
CC CC
C
C
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Peat
Plant
Peat
Lignite
Anthracite
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Carbon to CO2 to Climate Change
Students think:
• CO2 comes from people breathing and driving cars
• Plants need CO2, but don’t know how much plants use
• Climate change will happen in the future
Teaching Goals:
• Sources of CO2 in the USA
• Ability of plants to mediate CO2 in the atmosphere
• Effects of climate change on San Francisco
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What does burning fossil fuels do to the carbon?
Carbon
CO2
CO2
Carbon
Transportation
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How do Americans contribute to CO2 in the air?
Cars, trucks, buses, planes, trains, boats…
Factories, construction, mining, restaurants,...
Lights, electricity, heating, hot water…
People exhaling CO2 as they breathe…
Businesses
Homes
Population
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33% Transportation
44% Businesses
21% Homes
2% Population
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?
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What absorbs CO2 from the air?
CO2
CO2
CO2
Do the plants absorb all the CO2?
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Do America’s forests absorb all the CO2 that Americans produce?
Homes
Transportation
Businesses
Population
50,552 million tons
18%Forest Uptake
72% Leftover
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What happens to the extra CO2 in the air?
CO2
CO2
CO2
The extra carbon dioxide stays in the atmosphere.
CO2
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When there is more CO2, what happens to the atmosphere?
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What does the extra carbon dioxide do?
More CO2 = FeverLess CO2 = Healthy
100°F98.6°F 58.4°F57°F
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Does excess CO2 affect San Francisco?
Future
Piers closed already (ref?)
Now
San Francisco Zoo floods
475,000 people in California affected by coastal flooding
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Energy is a big cause of CO2 emissions
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Survey
• Non-divisible behaviors.
• Single step
• Required to change a person’s behavior
• Positive reinforcement
• Unlikely to choose actions that they feel they have no control over or interest in.
• Understanding what resources are available to students that are essential for doing these behaviors.
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Thank you!!!
http://www.calacademy.org/teachers/upload/docs/PlantsTeacherResourceGuide.pdf
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