Envi science teaching strategies ppt
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Teaching Environmental Science
CYNTHIA V. ANDAYAPhilippine Science High School
Main Campus
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Why Teach Environmental Science? 1. Environmental topics relate to
everyday life.
Air Water Energy Resources Waste Management
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2. It promotes environmental literacy among students.
So they can make informed decisions to protect themselves, their families, and their communities against environmental problems.
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3. We live in a vulnerable world. How we care for the environment now
will determine our future.
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How should we teach Environmental Science?
1. Conduct investigative activities.
Apply the methods of science – observe, determine the problem, gather and analyze data, infer, make conclusions.
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2. Bring students outside the classroom. to observe and understand the local
environment
to know what’s going on in their community
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3. Teach students how to think. Provide situations / exercises where they will
explore different perspectives of an environmental issue.
Role –play.
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4. Do service – learning.Combine environmental lessons with community service:
waste recycling programs
water quality monitoring
cleanliness campaign
promote environmental awareness through various media
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Create a Primer !
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5. Watch videos.
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6. Update using newspapers / magazines, the InternetKnow about what’s going on in the community.
Cebu City ‘not yet ready for plastic bags ban’
By Doris C. Bongcac, Cebu Daily News, 11:35 am, Sunday, June 3, 2012
www.inquirer.net
Climate Change is Happening http://www.epa.gov/climatechange/basics/
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Major Environmental Topics The Earth’s AtmosphereThe Earth’s HydrosphereSoil and Land Resources Energy ResourcesIntegrated Waste Management
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The Earth’s AtmosphereActivities: Graphing the atmospheric layers (Distance from the earth’s surface vs.
Temperature) Understanding ozone formation and
depletion Air Quality Monitoring (particulate matter in air) Film viewing: The Inconvenient Truth
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UVbradiation
Oxygen Molecule
Stratospheric UV Filtering
Ozone Molecule
O2 + UVb radiation O + OO2 + O O3 + Heat
Stratospheric Ozone Formation
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Stratospheric Ozone Formation
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Stratospheric Ozone Concentration
1mm = 100 dobson units Std: 300 dobson units
1 mm
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Stratospheric Ozone Destruction
CFCl3 + UV CFCl2 + ClClO + O3 O2 + O2
A Single Atom of Cl can destroy up to 100,000 ozone molecules
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The Earth’s Hydrosphere Tap water vs. Bottled water
Groundwater Movement
Water quality monitoring using the GLOBE protocols (Global Learning and Observations to Benefit the Environment)
Visit to a Water Filtration/Treatment Plant
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Properties of Water
•Water is a polar substance, with hydrogen bonds that make the forces of attraction between the molecules of water stronger
Source: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/H/HydrogenBonds.html
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• It has a high heat capacity--it can store a large amount of heat without a large change in temperature.
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It has a high heat of vaporization
(540 calories per gram of H2O).
It absorbs a large amount of heat energy as it evaporates.
It also releases a large amount of heat as it condenses.
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•boiling point at sea level = 1000C
melting point = 00C
It has a high surface tension, and a high wetting ability.
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Major Indicators of Water Quality
TransparencyWater temperatureDissolved oxygenpHElectrical ConductivitySalinityAlkalinityNitrate
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Soil and Land ResourcesSoil CharacterizationGrowing a Vegetable GardenHydroponics
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Energy ResourcesA Study of a Coal-Fired Power Plant
(Production and Distribution of Electricity)
Estimating Electricity Consumption
A Study of a Geothermal Power Plant
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Integrated Waste ManagementTypes of Wastes – Biodegradable,
Nonbiodegradable Plastics in Our Lives (Comparing
Polymers)Reuse, Recycle
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Published and distributed by C & E Publishing, Inc.
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