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Planet H2O- Water Supply and Demand
Overview:
In this lesson, the students are instructed to imagine that they are in control of a small country. They are shown a pitcher that contains their country’s water supply. They are then asked to make decisions on where the water should go. The students are given small containers that represent their needs and demands for water. Water is distributed from the supply pitcher for each one of their demands. About 2/3 of our water supplies goes to agriculture and food production. Two-thirds (2/3) of the water from the supply pitcher is poured into the “agriculture” container. Students then list other demands...drinking water, water for cleaning, etc. Students are then presented with other factors that will influence their supply and demand. An environmental factor, such as a drought, will mean that the affected part of the country will have an increased demand (water is distributed from the supply pitcher). A great increase in the human population in another part of the country will increase their demand as well (water is distributed from the supply pitcher). When the supply pitcher is almost empty, the topic of water scarcity arises. Water scarcity occurs when the demand for water out paces the supply and causes water shortages.


Thinkfinity Podcasts


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Subject: Health, Science
Title: Lawn Nitrates     
Description: In this Science Update, from Science NetLinks, you'll hear about how nitrates used as lawn fertilizer can be dangerous to the environment and human health. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 6,7,8,9,10,11,12



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Subject: Science
Title: Tomato Mold     
Description: In this Science Update, from Science NetLinks, you'll hear about a researcher who's helping tomato plants fight back against black mold, a fungus that destroys them. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 6,7,8,9,10,11,12



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Subject: Science
Title: Zeolites     
Description: In this Science Update, from Science NetLinks, you'll hear about a way to trap and seal up toxic waste using zeolites, a family of cage-like molecules. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 6,7,8,9,10,11,12



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Subject: Health
Title: Farmers & Pesticides     
Description: In this Science Update, from Science NetLinks, you'll hear about the dangers associated with exposure to pesticides. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 6,7,8,9,10,11,12



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Subject: Science
Title: Ozone Fill-Up     
Description: In this Science Update, from Science NetLinks, you'll hear about creative ideas for closing the hole in the ozone layer that was discovered over Antarctica in the 1980s. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 6,7,8,9,10,11,12



Web Resources: Podcasts


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Chalk Talk: Tragedy of Commons
http://science360.go...
Chalk Talk presentation on the Tragedy of Commons. The presentation discusses the effects of common ownership of resources.

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