engineering design challenge: water filtration · live interactive learning @ your desktop march...
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LIVE INTERACTIVE LEARNING @ YOUR DESKTOP
March 13, 2012
Engineering Design Challenge: Water Filtration
Presented by: Kristy Hill
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ENGINEERING DESIGN CHALLENGE: WATER FILTRATION
ENGINEERING DESIGN CHALLENGE: WATER FILTRATION
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Welcome
Kristy Hill
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Water Filtration• Have you had a chance to look at this lesson?
✔ Yes✖ No
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Syllabus• Lesson overview• NASA connection• Lesson in detail• Extensions
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National Standards• Grade Level: 5‐8• Physical Science• Science & Technology• Science as Inquiry• Measurement• Design
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This Guide offers:
Lesson PlanBackground Information
Career HighlightsTeaching Standards
Materials List Material Cost EstimateStudent Worksheets
DiagramsGlossary
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The Challenge• Students will design a water filtration device that will yield the purest water.
• Students will practice using the engineering design process.
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Let’s pause for questions
from the audience.
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NASA ConnectionWater Filtration
NASA ConnectionWater Filtration
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of the surface is
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Why is water important?
Type answers into the chat box.
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Water: The Essence of Life
• All living things contain water.• 70% of the human body is water.• Water is used in every aspect of our lives.
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Water RecyclingWater is recycled by
–Nature
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Water RecyclingWater is recycled by
–Nature–Cities
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Water RecyclingWater is recycled by
–Nature–Cities–International Space Station
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Water Recycling by Nature
• Earth has a natural process to recycle water.
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City Water Recycling• Cities and counties recycle water for human consumption.
• Water Treatment Facility
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Living in SpaceMercury
GeminiApollo
Space Shuttle
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International Space Station
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Water Recycling System Diagram
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Environmental Control and Life Support System (ECLSS)
Shown: Two “Express Racks” that fit into slots
at the ISS
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Environmental Control and Life Support System (ECLSS)
Shown: Two “Express Racks” that fit into slots
at the ISS
• Provides water for drinking, food prep and hygiene• Provides oxygen and removes carbon dioxide• Filters particulates and microorganism from air• Maintains cabin pressure• Monitors temperature and humidity levels• Circulates air through the modules
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ECLSS lab at Marshall Space Flight Center
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Let’s pause for questions
from the audience.
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Lesson in DetailWater Filtration
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DesignDesign
BuildBuild
TestTestRecordDataRecordData
AnalyzeResultsAnalyzeResults Engineering
Design Process
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DesignDesign
BuildBuild
TestTestRecordDataRecordData
AnalyzeResultsAnalyzeResults
Do you already teach the
Engineering Design Process in your classroom?
✔ Yes✖ No
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MaterialsClassroom materialsBalanceBucket or sinkGraduated cylinderpH test stripConductivity testerVinegarFood coloring Plastic cupsPaper towels
Group materialsWater bottlesCheeseclothPlastic wrapCotton ballsCoffee filtersActivated carbonAquarium gravelSandUncooked macaroni
*Check guide for a full list of materials.
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Procedures• Cut off the bottom of the water bottle.
• Cover the drinking end with cheesecloth.
• Select medium for the filtration system.
• Layer the materials in the bottle.
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Procedures• Test the wastewater’s pH and conductivity.• Pour wastewater through the system.• Test filtered water for pH and conductivity.• This is a slow process. Give the water time to filter.
• Pour filtered water through system again, retest, and redesign.
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Hint• In order to reuse your materials, have students stack all materials in coffee filters.
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Data Collection Sheets
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Measuring Conductivity• Conductivity is a measure of a material’s capacity to conduct electricity.
• Completely pure water will not conduct electrical current.
• Instructions are given in guide.
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Let’s pause for questions
from the audience.
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Extensions and ResourcesWater Filtration
Extensions and ResourcesWater Filtration
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Extensions• Test water from different sources.• Test other filter media.• Tour a water treatment plant.• Set a weight limit on the filtration device.
• Research other water treatments such as desalination.
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Culminating Activity• Create a “storyboard” poster that documents the evolution of the water filtration designs from initial to final stages.
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NASA eClips• Our World: Recycling on the International Space Station
• Aimed at grades K‐5
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Middle School Design Challenge
Video for student interest.This challenge is no longer funded.
WLMR Waste Limitation Management and Recycling Design Challenge
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Let’s pause for questions
from the audience.
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NASA EXPLORER SCHOOLShttp://explorerschools.nasa.gov
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NASA Explorer Schools• Are you a part of NASA Explorer Schools?
✔ Yes✖ No
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NASA Explorer Schools Website
Sign in or sign up
Video Tutorials
explorerschools.nasa.gov
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Video Tutorials
Lesson Library
Finding the Guide
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Search
Finding the Guide
Browse All Lessons
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LessonLesson
Video CollectionVideo Collection
SurveysSurveys
Water Filtration
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Video Collection
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CollaborationMaking Teaching Easy
Search for:NASA Explorer Schoolson facebook.
Follow us on Twitter:@NASAexplorersch
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http://neon.psu.edu
NEON ‐ NASA Educators Online Network
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Thank you to the sponsor of tonight's Web Seminar:
This web seminar contains information about programs, products, and services offered by third parties, as well as links to third-party websites. The presence of a listing or such information does not constitute an endorsement by NSTA of a
particular company or organization, or its programs, products, or services.
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http://learningcenter.nsta.org
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National Science Teachers AssociationDr. Francis Q. Eberle, Executive Director
Zipporah Miller, Associate Executive Director Conferences and Programs
Al Byers, Assistant Executive Director e-Learning
LIVE INTERACTIVE LEARNING @ YOUR DESKTOP
NSTA Web SeminarsPaul Tingler, Director
Jeff Layman, Technical CoordinatorBrynn Slate, Program Coordinator