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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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slide1

A Silicon Analog

of the

Carbon Based Laboratory Instructor

Professor Rudolph W. Kluiber

Rutgers University, Newark, NJ 07102

http://genchem.rutgers.edu

slide2

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
slide3

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
slide4

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
slide5

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
slide6

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

slide7

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

slide8

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

slide9

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
slide10

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.
slide11

SYLLABUS

http://genchem.rutgers.edu

slide14

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
slide15

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

slide16

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

slide17

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.
slide18

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.
slide22

VISUAL FORTRAN

Enter DATA using keyboard

Limited use of the mouse

Program only goes forward

There are re-caps

slide23

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.
slide24

CLOCK REACTION

VARIATIONSin theCLOCK REACTION

k, a, b, and c

Values of [I-] [BrO3-] [H+]

slide25

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.
slide28

Typical

Graded Printout

ACID BASE TITRATION

Student repeated experiment and earned an 83

slide29

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

slide30

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

slide31

PLAYCHEM

a series of EXTRA CREDIT Experiments

Short Simple Significant

http://genchem.rutgers.edu/PlayChem.html

slide32

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

slide33

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 .
slide34

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
slide35

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
slide36

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
slide37

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”

slide38

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
slide39

A Silicon Analog

of the

Carbon Based Laboratory Instructor

GROUP IV

C

Si

Ge

Sn

Pb

a TA called

GenChem

http://genchem.rutgers.edu

slide40

TALKTO THE MOLECULES

GROUP IV

C

Si

Ge

Sn

Pb

100.0/99.9 = 100.1

http://genchem.rutgers.edu