1. LIVE INTERACTIVE LEARNING @ YOUR DESKTOP March 13, 2012 Engineering Design Challenge: Water Filtration Presented by: Kristy Hill

2. ENGINEERING DESIGN CHALLENGE: WATER FILTRATION

3. Welcome Kristy Hill

5. Water Filtration Have you had a chance to look at this lesson? ✔ Yes ✖ No

6. Syllabus Lesson overview NASA connection Lesson in detail Extensions

7. National Standards Grade Level: 5-8 Physical Science Science & Technology Science as Inquiry Measurement Design

8. This Guide offers: Lesson Plan Background Information Career Highlights Teaching Standards Materials List Material Cost Estimate Student Worksheets Diagrams Glossary

9. The Challenge Students will design a water filtration device that will yield the purest water. Students will design a water filtration device that will yield the purest water. Students will practice using the engineering design process. Students will practice using the engineering design process.

10. Let’s pause for questions from the audience.

11. NASA Connection Water Filtration

14. Why is water important? Type answers into the chat box.

15. Water: The Essence of Life All living things contain water. All living things contain water. 70% of the human body is water. 70% of the human body is water. Water is used in every aspect of our lives. Water is used in every aspect of our lives.

16. Water Recycling Water is recycled by – Nature

17. Water Recycling Water is recycled by – Nature – Cities

18. Water Recycling Water is recycled by – Nature – Cities – International Space Station

19. Water Recycling by Nature Earth has a natural process to recycle water. Earth has a natural process to recycle water.

20. City Water Recycling Cities and counties recycle water for human consumption. Cities and counties recycle water for human consumption. Water Treatment Facility Water Treatment Facility

22. Living in Space MercuryGeminiApollo Space Shuttle

23. International Space Station

26. Water Recycling System Diagram

27. Environmental Control and Life Support System (ECLSS) Shown: Two “Express Racks” that fit into slots at the ISS

28. 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 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

30. Let’s pause for questions from the audience.

31. Lesson in Detail Water Filtration

32. Engineering Design Process

33. Do you already teach the Engineering Design Process in your classroom? ✔ Yes ✖ No

34. Materials Classroom materials Balance Bucket or sink Graduated cylinder pH test strip Conductivity tester Vinegar Food coloring Plastic cups Paper towels Group materials Water bottles Cheesecloth Plastic wrap Cotton balls Coffee filters Activated carbon Aquarium gravel Sand Uncooked macaroni *Check guide for a full list of materials.

35. 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.

36. 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.

37. Hint In order to reuse your materials, have students stack all materials in coffee filters.

39. Data Collection Sheets

40. 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.

41. Let’s pause for questions from the audience.

42. Extensions and Resources Water Filtration

43. 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.

44. Culminating Activity Create a “storyboard” poster that documents the evolution of the water filtration designs from initial to final stages.

45. NASA eClips Our World: Recycling on the International Space Station Aimed at grades K-5

46. Middle School Design Challenge Video for student interest. This challenge is no longer funded. WLMR Waste Limitation Management and Recycling Design Challenge

47. Let’s pause for questions from the audience.

48. NASA EXPLORER SCHOOLS http://explorerschools.nasa.gov

49. NASA Explorer Schools Are you a part of NASA Explorer Schools? ✔ Yes ✖ No

50. NASA Explorer Schools Website Sign in or sign up Video Tutorials explorerschools.nasa.gov

51. Video Tutorials Lesson Library Finding the Guide

52. Search Finding the Guide Browse All Lessons

53. Lesson Video Collection Surveys Water Filtration

54. Video Collection

55. Collaboration Making Teaching Easy Search for: NASA Explorer Schools on facebook. Follow us on Twitter: @NASAexplorersch

56. http://neon.psu.edu NEON - NASA Educators Online Network

57. Thank you for participating today! Kristy.Hill@nasa.gov

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59. http://learningcenter.nsta.org

60. National Science Teachers Association Dr. 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 Seminars Paul Tingler, Director Jeff Layman, Technical Coordinator Brynn Slate, Program Coordinator