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LIVE INTERACTIVE LEARNING @ YOUR DESKTOP

LIVE INTERACTIVE LEARNING @ YOUR DESKTOP. NSDL/NSTA Web Seminar: Chemistry Comes Alive!. Thursday, March 8, 2007 6:30 p.m. to 8:00 p.m. Eastern time. http://nsdl.org. Agenda:. Introductions Tech and help info Web Seminar training Presentation Evaluation Chat with the presenters.

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LIVE INTERACTIVE LEARNING @ YOUR DESKTOP

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  1. LIVE INTERACTIVE LEARNING @ YOUR DESKTOP NSDL/NSTA Web Seminar: Chemistry Comes Alive! Thursday, March 8, 2007 6:30 p.m. to 8:00 p.m. Eastern time

  2. http://nsdl.org Agenda: • Introductions • Tech and help info • Web Seminar training • Presentation • Evaluation • Chat with the presenters

  3. http://nsdl.org How many web seminars have you attended? • 1-3 • 4-5 • More than 5 • This is my first web seminar. • I don’t know what is a web seminar. Use the letters A-E located at the top left of your actual screen to answer the poll

  4. http://nsdl.org Al ByersAssistant Exec. DirectorNSTA Flavio MendezProgram ManagerNSTA

  5. http://nsdl.org Tech Assistance Jeff LaymanTech Support703-312-9384jlayman@nsta.org NSTA Susan HurstcalderoneScience Teacher Volunteer Chat Moderator

  6. http://nsdl.org What grade level do you teach? • Elementary School, K-5. • Middle School, 6-8. • High School, 9-12. • I teach college students, 13-16. • I am an Informal Educator.

  7. Screenshot

  8. Pull down menus: View: Window Layouts, Lock Windows Tools: Audio, Edit Profile Top buttons: Your current layout, Polling tools Participants’ window: Names of participants, Tools’ icons, Raise hands, Emoticons, Step away door Direct Messaging window: Show, Send Audio window: Talk button, microphone and speaker volume level

  9. http://nsdl.org Where are you now?

  10. LIVE INTERACTIVE LEARNING @ YOUR DESKTOP NSDL/NSTA Web Seminar: Chemistry Comes Alive! Thursday, March 8, 2007 7:00 p.m. to 8:00 p.m. Eastern time

  11. http://nsdl.org http://nsdl.org -NSDL Pathways for specific content -Newest Pathway: Chemistry -Rich variety of materials found in one place http://www.jce.divched.org/JCEDLib

  12. http://nsdl.org Our Presenters Dr. Lynn Diener Dr. John Moore Journal of Chemical Education (JCE)

  13. Today we will explore the chemistry of taste and odor using selected JCE resources Classroom Activity Featured Molecules Video http://nsdl.org

  14. To taste, which is most important? Tongue Touch Sight Smell http://nsdl.org

  15. The nose can distinguish 10,000 different scents 1% of our genes code for smell http://nsdl.org

  16. Many chemicals we smell when we eat or sniff a flower are like this one: http://nsdl.org What is this chemical called? A. Ketone D. Ether B. Ester E. Alkene C. Carboxylic acid

  17. The mouth tastes only 5 things -Sweet -Salty -Sour -Bitter -Umami http://nsdl.org

  18. Example structures (S)-Glutamic Acid (umami) Sucrose (sweet) Ascorbic Acid (sour) Wouldn’t it be nice to see all sides of a molecule at once? Strychnine (bitter) Sodium Chloride (salty)

  19. http://nsdl.org http://www.chemeddl.org/Quinine.html

  20. Which is bitter? http://nsdl.org Caffeine Maltose

  21. You can do this in your classroom Using JCE DLib you can find two different molecules and ask students to point out similarities, or differences. Molecules can be rotated to show similar views of each. Space filling or ball-and-stick can be shown. http://nsdl.org Sucrose Maltose

  22. Cells in the mouth have different taste receptors G-protein-coupled receptors Sweet Bitter Umami • Ion channels • Salty • Sour lllustration by William Oldham Taken from: http://www.vanderbilt.edu/vicb/Articles/LensSummer2005/WhereAreTheNewDrugs.htm Work by Rod MacKinnon Taken from: http://www.nsls.bnl.gov/newsroom/science/2006/01-MacKinnon.htm

  23. http://www.jce.divched.org/JCEDLib

  24. http://nsdl.org Fooling the tongue is easy… because there are only 5 tastes to mimic • Sweet • Sour • Bitter • Salty • Umami • A JCE Classroom Activity shows how.

  25. http://nsdl.org Which is really applesauce? A B

  26. http://nsdl.org Activity: making mock applesauce Need: • Cup • Crackers • Water • Sugar • Cream of tartar (or lemon juice)

  27. http://nsdl.org Are you planning to do the activity along with us? • Yes • No • Maybe

  28. http://nsdl.org Try this • Crumble 1 or 2 crackers into a dish • Add 2 tsp water • Add 1 tsp sugar • Add 1/8 tsp cream of tartar (or lemon juice) • Stir and taste

  29. http://nsdl.org How do these ingredients simulate applesauce? • Sweet (sugar) • Sour (cream of tartar) • Juicy (water) • Texture (crackers)

  30. http://nsdl.org Safety Matters • All JCE classroom activities include safety considerations. • For this activity make sure not to use lab equipment or perform the activity in a lab!

  31. Variations • Lemon juice or citric acid instead of cream of tartar • Try adding cinnamon or nutmeg • Use different crackers, saltine vs butter crackers • Add vanilla flavoring

  32. Extension: Bake a mock apple pie and a real apple pie • Use the best filling recipe from the students • Have a taste test, see who can tell the difference. • Frozen pie crust works great!

  33. http://nsdl.org Which one (or two) do you think was made with real apples?

  34. http://nsdl.org Mmm, tastes like cherry! Artificial flavoring is big business.

  35. http://nsdl.org Artificial flavoring • Cheaper • Purer and safer • Often tastes just as good • Active flavor is often chemically identical to the natural flavor Vanillin: artificial vanilla flavoring, taken from JCE DLib

  36. http://nsdl.org Which product uses artificial flavor?

  37. Another activity to try in class Have your students make cola using these ingredients: -sugar -vanilla extract -cinnamon -lime juice -club soda If you search for taste on the JCE index you will find more classroom activities and useful articles!

  38. is starting with resources from the JCE DLib, building on resources from the ACS Education Division and ChemCollective project, and will grow from there. Chemical Education Digital Library (ChemEd DL)…

  39. JCE QBank—Test Questions

  40. JCE WebWare

  41. http://nsdl.org JCE DLib Everything we used today can be found on the JCE DLib Please come and visit (after filling out the survey) Here is what to look for:

  42. http://nsdl.org Go to http://nsdl.org and click on the K-12 audience page • Download this seminar’s companion guide with resources from the seminar and more! • Expert Voices blog with our presenters: http://expertvoices.nsdl.org

  43. http://nsdl.org http://www.jce.divched.org/JCEDLib Dr. John Moore jwmoore@chem.wisc.edu THANK YOU! Dr. Lynn Diener lmdiener@wisc.edu Dr. Jon Holmes jlholmes@chem.wisc.edu

  44. National Science Teachers Association Gerry Wheeler, Executive Director Frank Owens, Associate Executive Director Conferences and Programs Al Byers, Assistant Executive Director e-Learning NSTA Web Seminars Flavio Mendez, Program Manager Jeff Layman, Technical Coordinator Susan Hurstcalderone, Volunteer Chat Moderator LIVE INTERACTIVE LEARNING @ YOUR DESKTOP

  45. JPL/NSTA: Using Earth to Explore Mars • March 14, 2007 • NSTA: Absolute Zero: The Cold Hard Facts About the Coolest Stuff in Physics • March 22, 2007 • 6:30 PM Eastern Time

  46. NSTA SciGuides: Provide tools to quickly and easily locate targeted science content information and teaching resources from NSTA-reviewed science web sites. http://sciguides.nsta.org

  47. Web Seminar Evaluation http://institute.nsta.org/survey/nsdlsurvey8.asp

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