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A Silicon Analog of the Carbon Based Laboratory Instructor

A Silicon Analog of the Carbon Based Laboratory Instructor. Professor Rudolph W. Kluiber Rutgers University, Newark, NJ 07102. http://genchem.rutgers.edu. General Chemistry Laboratory Talking to the Molecules. Philosophy Teach General Chemistry Teach Other Skills Students

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A Silicon Analog of the Carbon Based Laboratory Instructor

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  1. A Silicon Analog of the Carbon Based Laboratory Instructor Professor Rudolph W. Kluiber Rutgers University, Newark, NJ 07102 http://genchem.rutgers.edu

  2. General Chemistry Laboratory Talking to the Molecules • Philosophy • Teach General Chemistry • Teach Other Skills • Students • First college chemistry course • Varied Interests • Varied Ability • Teacher • Communication Skills • Interest • Ability

  3. PHILOSOPHIES • Cook Book or Verification • Students are given specific instructions. • Learn laboratory techniques and logic. • Comfortable and convenient. • Correlate with lecture to form a “community”. • Guided Inquiry or Discovery • Students are given general instructions. • Students work out the details. • Teach the student to think. • Make them think they figured it out • Others • Research Projects • Collaboration

  4. SUPPORTING Classic Cook Book Chemistry It’sEASY, COMFORTABLEand ROUTINE • STUDENTS • Almost all are not chem majors • Varied background (skill, ethic and temperament) • First college chemistry laboratory course • Most are foreign born; majority are women • INSTRUCTORS • All are foreign born • Many initially have language problems • Familiarity brings comfort • PHILOSOPHY • Laboratory supports lecture

  5. ClassicCook Book Chemistry…IT’S EASY DRAWBACKS • Copying and cheating can be prevalent • PreLabs • Experiments: section to section, year to year • Learning can be minimal • Laboratory should be fun • Laboratory is a joke • Labs are labor intensive • Junior faculty are hired to carry out research • Laboratory used to increase contact hours • Return on teaching investment • Good, cheap help is hard to get (undergraduates?) • May create conflicts of interest • Lack scientific sophistication

  6. GenChem A Combination of Hardware and Software Dell Poweredge 2600 1.8 GHz Xeon dual CPU 33.8 GB SCSI Memory $3,000 Physically, Mentally and Visually challenged Excellent memory, consistent, tireless, accurate

  7. GenChem A Combination of Hardware and Software Dell Poweredge 2600 1.8 GHz Xeon dual CPU 33.8 GB SCSI Memory $3,000 COOK BOOK Physically, Mentally and Visually challenged Excellent memory, consistent, tireless, accurate

  8. GenChem A Combination of Hardware and Software Dell Poweredge 2600 1.8 GHz Xeon dual CPU 33.8 GB SCSI Memory $3,000 NOTE: GenChem software can be easily transferred to another WinTel server Contact: kluiber@genchem.rutgers.edu

  9. Rutgers University (Newark) General Chemistry Laboratory • Two semester course • 1 credit each semester • Meet for 170 min, 1X/week, 14 weeks • 14 experiments-5 extra credit/semester • Written 3 hour FINAL Exam • Pre- or Co-Requisite: 4 credit lecture • Separate grade for Laboratory • Students work individually • Four Lab Practicals per semester

  10. What GenChem Does • Creates a course Syllabus. Puts it on the web. • Produces printer ready copy for a Lab Manual. • Provides Pre-lab Talks as web-based downloadable videos. • Produces individualized web-based PreLabs. Records passing. • Provides Start-of-Experiment Quiz. • Individualizes each experiment. • Accepts student’s Experimental Work and evaluates. • Accepts Calculations and Conclusion and evaluates. • Issues Warnings but only on initial entries. • Grades each student’s work. Treats all studentsequally. • Acknowledges particularly good work • Allows each student to access their Course Record, anytime. • Gives out Final Course Grade at the end of the semester.

  11. SYLLABUS http://genchem.rutgers.edu

  12. Pre-Experiment GenChem working for the Student • Manual describes experiment • Videos show background and data collection • PreLab must be passed to start experiment • All the above can be done on-campus or off. • Videos and PreLabs are Web-Based • http://genchem.rutgers.edu

  13. Pre-Experiment Genchem working for the Student • Manual Describes each experiment Step by step directions. Mathematics and logic discussed. About 140 pages $20.00 / manual

  14. Pre-Experiment Genchem working for the Student • Videos show background and data collection Videos are 10-15 min (100-200 MB) Show background, DATA collection Calculations are displayed but not explained. SONY CCR VX2000 Windows Movie Maker .WMV format

  15. Pre-Experiment Genchem working for the Student • PreLab “Ticket” to start Experiment • Individualized Problem • Must answer problem correctly to continue. • 8 multiple choice questions • (7 correct to pass) • May have 10 or more variations • Written in: • Visual Basic Script, • Active Server Protocol ASP.

  16. The Experimentand GenChem • Asks an initial Question. • Individualizes Experiments. • Accepts experimental data. • May warn of bad data on first entry. • Accepts calculations and conclusions. • Warns of poor calculations on first entry. • Grades and gives printout to student. • Grading includes “Late” and “Sig Figs”. • Records grades automatically. • Poor Experiments can be repeated. • All the above must be done in the Lab.

  17. VISUAL FORTRAN

  18. VISUAL FORTRAN

  19. VISUAL FORTRAN

  20. VISUAL FORTRAN Enter DATA using keyboard Limited use of the mouse Program only goes forward There are re-caps

  21. The Experimentand GenChem • Asks an initial Question. • Individualizes Experiments. • Accepts experimental data. • May warn of bad data on first entry. • Accepts calculations and conclusions. • Warns of poor calculations on first entry. • Grades and gives printout to student. • Grading includes “Late” and “Sig Figs”. • Records grades automatically. • Poor Experiments can be repeated. • All the above must be done in the Lab.

  22. CLOCK REACTION VARIATIONSin theCLOCK REACTION k, a, b, and c Values of [I-] [BrO3-] [H+]

  23. The Experimentand GenChem • Asks an initial Question. • Individualizes Experiments. • Accepts experimental data. • May warn of bad data on first entry. • Accepts calculations and conclusions. • Warns of poor calculations on first entry. • Grades and gives printout to student. • Grading includes “Late” and “Sig Figs”. • Records grades automatically. • Poor Experiments can be repeated. • All the above must be done in the Lab.

  24. Calculation Warnings

  25. A good experiment

  26. Typical Graded Printout ACID BASE TITRATION Student repeated experiment and earned an 83

  27. The Experimentand GenChem • Asks an initial Question. • Individualizes Experiments. • Accepts experimental data. • May warn of bad data on first entry. • Accepts calculations and conclusions. • Warns of poor calculations on first entry. • Grades and gives printout to student. • Grading: “Late” and “Sig Figs”. • Records grades automatically. • Poor Experiments can be repeated. • All the above must be done in the Lab. 100.0/99.9=100.1

  28. GRADING 1287 100 45 250 1682 13 EXPERIMENTS @ 99 pts/exp…… 5 Extra Credit experiments………… Quiz…………………………………………. Final Exam……………………………….. TOTAL……………………………………… Guarantee: A 1400; B 1250; C 1100 GRADING is on an absolute basis GRADING is not competitive! GRADING is consistent

  29. PLAYCHEM a series of EXTRA CREDIT Experiments Short Simple Significant http://genchem.rutgers.edu/PlayChem.html

  30. PLAYCHEM EXPERIMENTS 3. AVOGADRO 4. BREATHALYZER 7. CANDLELIGHT 10. HYFORM 13. MILK 16. MONEYCULE 19. PARADOX 22. POTENTIAL 25. SOAP 30. VINEGAR 1. ALCHEMY 4. BISULFATE 7. CALIBRATE 10. DENPEN 13. ICE 16. MOLRAT 19. MONEYKIN 22. POLLUTION 25. PUTTY & SLIME 28. SODACAN 31. ZERO 2. ASPIRIN 5. BLACKPEN 8. CANCRUSH 11. DOBJECT 14. IVY 17. MONEYCAL 20. ORG 23. POPCORN 26. REACT 29. STEELWOOL 32. ZINC IODIDE http://genchem.rutgers.edu/PlayChem.html

  31. The Silicon, GenChem, ADVANTAGE • Makes students accountable. • Students vie for best grade rather than fastest exit! • Provides pre-lab talks (videos) on demand. • Individualizes and keeps record of PreLabs. • Individualizes and keeps records of experiments. • Warns of serious experimental errors. • Warns of serious calculation errors. • Checks sig figs.100.0/99.9 = 1.001 • Grades and records lab work immediately • Identical grading: student to student; year to year. • Prevents and detects attempts at cheating. • Allows extra-credit and repeat experiments. • Keeps excellent, accurate up-to-date records. • Allows synchronization with lecture. • Allows many experiments to run concurrently. • Controlled chaos • Does not make errors. • Does not suddenly disappear from the lab .

  32. The GenChem ADVANTAGE • Accountability • Correlates with Lecture; Emphasizes Chemistry • Graded on a absolute basis. • All students can earn an A in the course. • Both ability and effort are rewarded. • 150 points separate letter grades • 100 points of extra credit (and fun) • Poor experiments may be repeated (with 5-9 pt penalty) • Repeat experiments are monitored by Carbon TA. • Competition for higher grade rather than fastest exit. • Multiple experiments done simultaneously • Peer instructors. Distance Learning

  33. DISADVANTAGES of GenChem • Poor at enforcing SAFETY. • Stresses safety but can not enforce it. • Sits at the desk. Does not walk around. • Does not check DATA SHEET properly. • Does not check written work. • Does not check product purity. • Does not do RESEARCH. • Poor at relieving the agony of failure. • Not a people person

  34. What Does “CARBON” Do? • NEW TAs • Check experiments beforehand • All TAs (undergraduate or Graduate) • Interact with students during laboratory time • Check: DATA directly on data sheet in ink • Using proper experimental technique • Provide major help with PreLabs • Provide minor help with lab calculations • Explain the graded DATA SHEET • Provide encouragement where necessary • Analyze UNKNOWNS • Grade products and occasional write-up • Keep balances from being destroyed • Make sure the lab is left clean • STOCKROOM • Provided Equipment and UNKNOWNS • Keeps laboratory clean and stocked

  35. STUDENT EVALUATION (Chem 113 7/7/2006) Based on ratings of 1-5 Total students getting grades... 54 (61)Total students evaluating... 48 Lab help in Lecture... 3.70 Help from Lecture... 3.21 Help from PreLabs... 4.25 Help from Videos... 4.42 Help From Manual... 3.79 Instructors rating... 4.02 Improve logic and thinking... 3.77 Positive learning experience... 3.83 Overall Rating... 3.83 “Don’t teach it the same way”

  36. GenChem General Chemistry Laboratory • Teaches Chemistry • Offers a smorgasbord of pedagogy • Reinforces lecture • Tries to challenge • Works with our TAs and students • Works for me

  37. A Silicon Analog of the Carbon Based Laboratory Instructor GROUP IV C Si Ge Sn Pb a TA called GenChem http://genchem.rutgers.edu

  38. TALKTO THE MOLECULES GROUP IV C Si Ge Sn Pb 100.0/99.9 = 100.1 http://genchem.rutgers.edu

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