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Unit 5: Waste Management (21 hours)
Students explore the question: Will humans eventually die because of their inability to deal with their own waste? Students examine the sources of waste, why wastes are a concern, current waste treatment practices and decision making, and alternative strategies for waste management. The use of a graphic organizer throughout the unit allows students to summarize the information of the unit. The End-of-Unit Task directs students to research one alternative waste management strategy and perform a cost/benefit analysis.
Details
of Activities
Act. 5.1.1 Students brainstorm sources of waste.
Act. 5.1.2 Expert groups examine specific sources and identify the types
of wastes produced that they post on chart paper. Individuals create a graphic
organizer which summaries the information.
Act. 5.1.3 Students examine a “pollution free” fuel (e.g., hydrogen fuel,
electric cars) and map backwards to examine the sources of the fuel for
pollution and waste.
Act. 5.1.4 Introduce the End-of-Unit Task and remind students to continue
working on the Final Assessment Task.
Act. 5.2.1 Students extend their research from Activity 5.1 into the
effects of the wastes on the environment and post in the classroom. Individuals
extend their graphic organizer from Activity 1 to include the environmental
impact.
Act. 5.2.2 Students design and conduct an experiment into the effects
of household wastes on the population of yeast over time.
Act. 5.3.1 Students participate in a field trip to a specific site (e.g.,
sewage treatment plant, recycling depot, septic tank pumper, industry, farm)
to look at waste management practices.
Act. 5.3.2 Students participate in a teacher directed lesson about current
practices (videos, newspapers, etc.) including demonstrations by teacher
(e.g., alum) of waste treatment. Individuals extend their graphic organizers
to include current treatment methods.
Act. 5.4.1 Students examine a case study of a local waste management
issue in which students examine all the components of the decision making
process (political, economic, environmental, societal, etc.).
Act. 5.4.2 Students participate in a role play of a town hall meeting
or other decision making process. Each student makes and supports a decision
about the issue (risk/benefit analysis).
Act. 5.5.1 Students listen to a guest speaker or watch a video addressing
state of the art waste management or a company waste management program.
Individuals add to the graphic organizer alternative suggestions for waste
treatment such as high temperature incineration, composting, recycling,
use of the waste for another purpose, sending waste to space, recycling
grey water, etc.
Act. 5.6.1 Students research one alternative waste management strategy
and produce a pamphlet, webpage, audio tape, video, etc. about the process
including a risk/benefit analysis. (Making Connections, Communication).