decision analysis description: students will use a decision analysis chart to decide what cleaning...
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Decision Analysis
Description:Students will use a decision analysis chart to decide what cleaning product to clean the mildew in a shower. Students will rank the products using three criteria: (a) Effectiveness, (b) Safety, and (c) Personal Preference.
Disciplines Covered: Social Studies & Health
Prep Time: 30 minutes
Activity time: 1 class period
What Should I Use to Clean my Shower? Introduction
You have 20 minutes to complete this task
1. Work in groups of 2-32. Refer to product criteria and
labels3. Complete “Product
Comparison” sheet for Tilex® and Lysol®
4. Rate Tilex® and Lysol® by the listed criteria. (*For each factor answer the question, “Does this product rate high (=3) or low (=1)”?)
5. Make a final decision about product choice.
What Should I Use to Clean my Shower? Introduction
Decision Analysis
XStudent Worksheet 1:
Household Product Comparison
Product
CriteriaTilex®
Lysol®
Antibacterial Kitchen Cleaner
Vinegar
Threshold (LOEL)
LD100
LD50
Toxicity
Signal Words
Safety Instructions
Product Appeal? Y/N
Cost
Non-damaging to Surfaces? Y/N
Ease of Use
Synthetic vs. Natural Product
Other:
Other:
XProduct
Criteria
Tilex®
Lysol®
Antibacterial Kitchen Cleaner
Vinegar
Threshold (LOEL) ~0.001% ~0.01% ~1%
LD100 ~1% ~100%Not able to determine
LD50 ~0.008% ~0.5% ~100%
ToxicityModerately
toxicSlightly Toxic
No Toxicity Label
Signal Words Warning CautionNo Signal
Word
Safety Instructions
Gloves, ventilation
recommended. Avoid
breathing vapors
No information
listed
No information
listed
Product Appeal? Y/N
Answers will vary
Answers will vary
Answers will vary
Cost ~$4.00 ~$4.00 ~$1.50
Non-damaging to Surfaces? Y/N
No No No
Ease of Use See directions See directionsNo
information listed
Synthethic vs. Natural Product
Synthetic Synthetic Natural
Other:
Other:
Household Product ComparisonTeacher Key
Student Worksheet 2: Decision Analysis ChartCleaning Product Options
Decision Criteria & Factors
Tilex® Lysol® Vinegar OtherProduct:
Effectiveness: Based on each of the three factors listed below which product do you think is the most effective? 1 = Least Effective, 2 = Moderately Effective, 3 = Most Effective
Threshold (LOEL)
LD100
LD50
Safety: Based on each of the three factors listed below which product do you think is the most safe? 1 = Least Safe, 2 = Moderately Safe, 3 = Most Safe
Toxicity
Signal Words
Safety Instructions
Individual Preference: Based on each of the five factors listed below which product is the most appealing? 1 = Least Appealing, 2 = Moderately Appealing, 3 = Most Appealing
Product Appeal?
Cost
Non-damaging to Surfaces?
Ease of Use
Synthetic vs. Natural
Total Product Score:
Student outcomes:• Apply toxicology concepts to
decision making;• Decisions involve balancing
costs, benefits, personal values and scientific evidence;
• Develop and use criteria for evaluating solutions to a particular problem;
• Use a decision chart to evaluate solutions or actions in light of specific criteria or goals;
• **In the HCP scenarios, students assess chemical risks to humans and environment.
What Should I Use to Clean my Shower? Debrief
Decision Analysis
Decision Analysis
Enrichment Ideas:• Have students create their
own criteria to rank products;• Expand decision analysis to
include more chemicals-- Conduct internet searches for other products that claim to control mold;-- Add these products into label reading and mold control activities
• Ask students to take on the role of various stakeholders (e.g. product manufacturer, parent, etc.)
What Should I Use to Clean my Shower? Debrief