A String of Pearls – What I Wish Someone Had Told Me
When I Started Teaching
Dee
U. Silverthorn, Ph.D.
University of Texas at Austin
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Dee Silverthorn is a comparative physiologist and Senior Lecturer in
Integrative Biology at the University of Texas at Austin. She teaches a
large undergraduate physiology lecture course, where she is incorporates
active, inquiry-based, and cooperative learning. Her success with
nontraditional approaches has been recognized by a number of university
and national teaching awards, including the APS Guyton Physiology
Educator of the Year (2001). She also develops investigative
laboratories for students and teaches a “preparing future faculty”
graduate course. Dee recently completed a six-year term as editor of
Advances in Physiology Education and a three-year term on APS
Council.
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In clinical medicine a pearl is a nugget of wisdom
that is passed from generation to generation. In this article, the
pearls are the little bits of wisdom that we gather as teachers. Most of
them never appear in print, and usually experienced teachers learn them
the hard way – by doing the “don’t”s and not doing the “do”s. So in the
interest of helping the newest generation of teachers avoid the errors
of their elders, I gathered pearls from many colleagues about teaching.
What follows are semi-random, mostly pragmatic, bits of advice about
teaching. Many are common sense. Not everything will apply to every
teaching situation, so take what is helpful and ignore the rest. And be
sure to add your own pearls at the Mentoring Forum website!
This article is not a full-fledged “how to teach
your first course.” For information on that subject, see the Mentoring
Forum column on "Teaching
Your First Course" by Jodie
Krontiris-Litowitz. One
of the most important pieces of advice that Jodie had was about writing
the syllabus. Most schools consider the syllabus to be a contract
between the instructor and students, and you should consider which of
the pearls discussed below are important enough to have a place in the
syllabus.
Before the First Class Meets
DO your homework before the first class
meeting!
-
Find the classroom. Time how long it takes
you to get there. Double that if you have to go outside in bad
weather to get there.
-
Play with the computer console and make
sure you know how to hook up your laptop, download your
Powerpoint to the console computer, start the web browser. Check
for logins and passwords and write them down.
-
Time how long it takes to get everything
powered up and functioning. Make sure you get to class each day
with that time + 5 minutes to spare.
-
Find the light controls for the room and
test the different settings by putting up a slide and moving
around the back of the classroom to make sure it’s visible.
-
Find out who to call when you have
technology problems during class and keep their phone numbers in
your class materials. (See Technology DO #1.)
-
Check out the sound system and how to alter the
volume. If there is a portable microphone, figure out how to use it.
Bring extra batteries for it if not provided. Decide how you will be
standing when talking to the class and put the lapel microphone on
the side nearest the audience so that you are talking over it as you
look at the audience.
-
Consider having a dedicated teaching tote bag
for each class. Some things to put in it and leave in it: laser
pointer, tissues, water, pens, paper, index cards, transparencies
and markers in case the computer fails, class roster and photo
roster. Include a list of phone numbers for IT, campus police, and other
emergencies.
General Classroom Management
-
DO start your course by being strict and
adhering to the rules in your syllabus and institution. It’s
easy to loosen up later but impossible to get control in the
middle of the semester if you relinquished it at the beginning.
-
DON’T end class early in the beginning of
the course. The students then expect you to do that regularly.
-
DO end class on time. Respect the students’
time. Many of them have to go to another class or to work, and
running overtime is your problem, not theirs. Know what you can
omit if you start to run long.
-
Remember that learning doesn’t happen when
you are talking.
-
Try to remember what it was like to not
understand. DON’T ever say “It should be obvious....”
-
DON’T let the class make critical
decisions. Ask for input, but you are in charge.
-
DON’T ever say “This won’t be on the test.”
-
When speaking, own every word. This will
slow you down and give a different emotional tone to what you
are saying.
-
DON’T let the students see you flinch.
-
If you give a traditional lecture,
rehearse! Lecturing is a performance.
-
Humor goes a long way but it should be
appropriate and kind. DON’T tell jokes if you’re not good at it.
-
If you have an interactive classroom, get
students comfortable with talking by having them talk to each
other.
-
If you want students to behave a certain
way in the classroom, such as having them work in small groups,
introduce the behavior the first day and make sure you repeat it
each session.
-
When the class is discussing a question in
small groups, use the “triple roar” rule. The first roar is,
“What’s the question?” The second roar is students discussing
the answer. The third roar (and time to call everyone back
together) is “What are you doing tonight?”
-
If possible, get to class early and chat
informally with the students.
-
If you expect students to turn their cell
phones off, make sure you turn yours off too!
-
Plan ahead when teaching a class for the first
time. Figure out how long you think it will take to put together
each lecture. Then double that time or be prepared to stay up all
night. Developing a class for the first time always takes longer
than you think.
Teaching with Technology
Technology is wonderful until it doesn’t work.
DO be prepared for when it fails.
-
Have a backup plan in case the computer
fails or your file won’t open. Bring a duplicate copy of your
presentation file. Have a print copy of your slides so that you
can use the chalkboard if all media options fail. (In
PowerPoint, select the “handouts” option in the PRINT window to
print multiple slides on one page.)
-
If you’re presenting with a classroom
computer console:
PowerPoint software
versions are not equal. Open your PowerPoint presentation and run
through ALL the slides. Look carefully at equations and symbols, and
make sure links to websites or video clips work. My embarrassing moment
was the lecture where I put up the slide with Poiseuille’s law, only to
find a telephone, airplane, and happy face in replace of the delta, eta,
and pi symbols in the equation.
Test how to switch from your PowerPoint to
a web page or to the document camera.
-
If using your personal laptop, check what
you have set for your desktop image and screensaver. It can be
embarrassing if your screensaver turns on and starts running
through images of your last family vacation at the beach.
-
Putting together a PowerPoint presentation
takes longer than you think it will.
-
DO learn simple PowerPoint techniques: how to
mask out unwanted sections of images, how to add new labels. Simple
animations such as making bullet points appear one by one will help
you build your story. Make sure your font size and colors are
visible from the back of your room.
-
Never save your PowerPoint as a presentation
because you will then be unable to edit it.
-
Decide whether you are going to post copies of your
PowerPoint slides. If students can learn everything by downloading and
reading the slides, why are they (and you) bothering to go to class?
Consider posting an edited version instead. If you give students a file
that has all the images, long definitions, and a skeleton outline, they
can print it out and bring it to class to take notes on. This will make
class run smoothly but someone who does not come to class will not know
everything that was said.
-
DO consider your policy on student use of laptops,
tape recorders, and cell phones in class and make sure it is clearly
spelled out in the syllabus. I ban laptops in the classroom because I
want my students interacting with each other and not with a computer
screen. I’ve observed too many lectures where students with laptops were
surfing, reading email, or otherwise not actively engaged in what was
taking place. I also ban cell phones.
-
DO consider using a personal response system as
part of your teaching. Even if you give a traditional lecture, you will
find it enlightening to stop at the end of a 10- to 15- minute section and
ask a clicker question or two to test
whether the audience understood what you just covered.
-
One of the new technology innovations coming soon
will be software that allows students to use their cell phones as
“clickers.” I have already made the decision that I will hold to my cell
phone ban and not use this software.
-
I turn down requests from students to videotape my
class as I have no desire to appear on YouTube. I do allow students to
audiotape. This can be particularly helpful for students whose native
language is not English. If they use a tape recorder with a counter or
timer, they can note the locations of segments that they need to review,
which saves having to listen to the entire recording.
-
For additional pointers on effective presentations,
see the Mentoring Forum article by Susan McKarns on “Delivering a
Dynamic Job and Chalk Talk.”
Teaching Large Classes
-
Large classes are not merely teaching –
they are performances. To communicate effectively, you must
project and be larger than life. Unless you have a booming voice
that you can sustain for the entire period, a microphone is a
necessity (portable is preferred, to give you mobility).
-
DO try to create a sense of community in
the classroom so that the students become less competitive and
more willing to help each other learn. This is not as much of an
issue at smaller schools or at institutions where students move
through the curriculum as a cohort, but it can be a major
impediment to creating an interactive classroom at larger
universities where a student may not know anyone else in the
room.
-
DO learn student names. It becomes a form
of crowd control. If you call someone by name who has never
spoken to you, the students will think you have learned
everyone’s name, and they suddenly become more responsible about
showing up for class. It also shows the students you care about
them as individuals.
-
The best way I’ve found to learn names is from
photos of the class. Even if your school provides photo rosters, the
photos may be out of date and the students unrecognizable. I like to
have students stand in front of the board in groups of 3-4 and write
their names over their heads, then take a digital photo. The 4x6"
prints then make a good set of flashcards for learning names.
-
Distributing handouts in a large class can eat
up time. Try the "cell division" method. Split the handouts into two
piles and give one pile each to two students in the front row. Those
students take one handout, then split their pile in two and pass the
two piles on to students who continue taking one handout and
splitting the remainder into two piles.
Handling Questions When You Don’t Know the Answer
-
DON’T pretend to know the answer. If you do,
someone in the class will have worked with the expert in that area
and you are sure to be exposed as a fraud.
You can always turn the question back to the class:
“Interesting question. What do you think?” or “Can anyone answer this?”
Or take advantage of the situation to model for students how you would
find the answer. There is nothing wrong with admitting (occasionally)
that you don’t know. There is no way we can all know everything.
If you have internet access in the classroom, go
through the steps you normally use to find the information, explaining
what you are doing as you go. Introduce the class to Google Scholar and
to PubMed as you search. Many students have never been formally trained
in how to do an efficient search, so you can take advantage of not
knowing the answer to create a teachable moment.
Testing and Grading
-
DO develop clear guidelines about what
constitutes an excused absence for a class or exam and spell it
out in the syllabus. DON’T be shy about requiring documentation
for a death, illness, or other family crisis. This will help you
avoid the “dead grandmother syndrome” that peaks right around
exam time. (For a humorous description of this phenomenon, see
Mike Adam’s essay at
www.math.toronto.edu/mpugh/DeadGrandmother.pdf)
Decide in advance how you will handle makeup
tests for excused absences. In my class, I give cumulative tests, so
the final exam is optional for students with a B and required for
students with a C or less. If someone has an excused absence for a
test, they must take the comprehensive final exam, which then counts
for 50% of their semester grade. (The final is 40% of the grade for
other students.) This policy has almost eliminated the problem of
absences for a test.
-
DO write your tests sufficiently in advance
that you (and ideally someone else) can proof them. Number each
page and check the page and question numbers for duplicates and
omissions. Write the key before giving the exam; it’s a good way
to find your errors. For free-response questions, restrict the
amount students can write by giving them an answer box.
-
DO be consistent in your grading. The students
talk to each other and you’ll have a rebellion on your hands if half
the class gets credit for an answer that you counted wrong for the
other half.
-
DO develop a grading rubric before you start to
grade. Then look at 5-10 random student answers to see how well the
answers match your rubric. A revision of the rubric may be
necessary. As you grade, make notes of which answers you give
partial credit for and how much credit each partially correct answer
gets. If you are grading a large number of tests, this step is
essential to maintain consistency.
-
DON’T post a test key until you have finished
grading the tests. Early posting means early protests. If you are
giving multiple-choice exams that are graded by computer, look at
the item analysis to decide if you will throw out a question or
allow multiple correct answers.
-
DON’T hand tests back until you are ready to
dismiss the class. No one will hear a word you say once they have
their tests in their hands. If you want to talk about the correct
answers, do it before you give the tests back.
Returning tests in large classes can be difficult,
especially given guidelines for maintaining student privacy. We put a
cover sheet on our tests that has the student name near the top. The
test starts on page 2 and grades go on page 2. With this system, we can
lay out the tests alphabetically and have students come up in groups to
get them while keeping grades confidential.
-
DO require written challenges to grading. This
makes the students think through why they believe they should get
credit. Often you will uncover their misconceptions in their written
challenges.
An efficient and fair process for students to cite
or challenge ambiguous or otherwise unanswerable questions (no, or more
than one, correct answer) is to add a last page to an exam for this
purpose, with instructions to explain the reason for the challenge. You
can tear off the pages and collate them, which is especially helpful if
you have a team-taught or large class.
Cheating
It would be nice to pretend that academic
dishonesty doesn’t exist, but the sad truth is that it does. Find
out if your institution has an honor code and what the policies are
for handling suspected cases of academic dishonesty. At my
institution you cannot lower a student’s grade for cheating without
going through a formal procedure in which the student signs
paperwork that either accepts the penalty or requests a formal
hearing with the Dean of Students office. It seems rather
bureaucratic but you do not want to find yourself in the position of
the faculty member who was sued for defamation of character after
the president of his institution overturned a cheating penalty that
had previously been upheld by the faculty member’s Chair and Dean.
What are some of the ways students cheat?
Probably the most prevalent and insidious is plagiarism. Many
students honestly do not understand what constitutes plagiarism, and
this problem is compounded by the ease with which people can cut and
paste blocks of text from the web. Depending on what kinds of
writing assignments you have, you will have to devise methods to
make plagiarism more difficult.
-
One way to prevent plagiarism if you are
assigning the equivalent of a term paper is to require the students
to do some type of oral presentation (a poster or brief talk) in
which they can be questioned. It is also helpful to change the
topics for these assignments from semester to semester. In my lab
course, that means we rotate experiments from year to year.
-
Another strategy is to require students to turn
in the title page or first page of each article or book cited. I
have students write annotated bibliographies for their projects as a
way to force them to start their research early, and I had a serious
problem with plagiarism of the article abstracts. Once I required
students to turn in the title pages with the abstracts, the
plagiarism all but disappeared.
-
How can you find the source if you suspect a
paper is plagiarized? Many institutions subscribe to software or web
sites that will help with this task. An easier way is to find a
sentence or phrase that you suspect has been lifted from another
source and copy it into a Google search box with quotes around it.
You will then find any online resources that match the quote. I
caught one student who made up a citation and “wrote” his
bibliography annotation by lifting a paragraph from a professor’s
website. Here are some helpful resources for educating students
about plagiarism:
Preventing plagiarism:
www.lib.utexas.edu/services/instruction/faculty/plagiarism/preventing.html
Interactive tutorial on what constitutes
plagiarism:
www.lib.utexas.edu/services/instruction/learningmodules/plagiarism/about.html
Guide for students, with examples:
www.utexas.edu/lbj/students/writing/plagiarism.pdf
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DO establish a set of rules for testing
situations, be explicit about them in the syllabus, and enforce
them. Cheating on tests may be worse in large classes where students
feel some sense of anonymity. Sometimes the cheater is working
alone, but all too often there is collusion. This can range from
elaborate systems using cell phones and pagers to communicate to
"cheating rings," where students pay other students to take their
tests for them. Some testing rules to consider include no talking
except to the instructor; students with wandering eyes will cause
someone to be moved to another seat; no books, backpacks, coats,
etc. at the student's seat; no hats except baseball caps turned backwards.
No
calculators unless specifically permitted; no memory calculators; no
cell phones or pagers. Exams cannot be written in red or pink ink;
no
"white-out"; exams written in pencil will not be re-graded if there
is any evidence that the answer has ever been erased. There must be
one empty seat
between students. If a student leaves the room once the exam has started,
s/he may not return.
If you suspect cheating, you should do
whatever you can to stop it (take away notes, move someone) but you
should always let the suspect(s) finish the exam. If possible, have
someone else in the room to help proctor the exam and ask the second
person to witness any suspicious activity. You may not search a
student’s personal belongings or person without their explicit
permission.
DO Know
the Rules and Ethics
Some of these will
vary by institution but others are universal.
- Know your institution’s policies on handling students with
disabilities, particularly those that require special classroom or
testing accommodations. Some students are allowed double time for
tests (unless speed is one of the skills being tested) or must have
a low-distraction environment. You usually receive a written
notification from the office for students with disabilities that
spells out what special considerations a student needs, and you must
meet those accommodations, even if it is inconvenient.
-
The Family Educational Rights and Privacy Act (FERPA)
governs the privacy of student records and academic performance. If
a student is over 18, you cannot talk to Mom and Dad about their
child unless you have explicit permission from the child. If Mom and
Dad get nasty, refer them to the Dean.
-
Know your institution’s resources for students
with emotional or psychological problems. Where can you send
students who are depressed or suicidal? You should also know the
institution’s recommendations or rules for handling in-class
disturbances. Who do you call when a student who just failed your
test puts his fist through the glass door to the classroom?
-
Most schools have a sexual harassment policy.
In general, you should not socialize with students until they are no
longer your students. But sexual harassment works both ways, and
students who become obsessed with you can be very creepy. Know who
to contact if a student starts stalking you.
-
We recommend to new faculty that they keep
their home address and phone number unlisted. Many students are
night owls and you may not appreciate a 1:00
am
call from the study group who can’t agree on the right answer to a
question.
Watch What You Say to Students
If you want information to spread, tell a student.
Their communication network is amazing. Unfortunately, the network also
can work like the whisper game, where the original message is
significantly altered after being filtered through many iterations. Use
discretion and never talk about one student to another except in the
most general, unidentifiable terms.
Working with Teaching Assistants
Many of you reading this are at institutions that
do not use graduate teaching assistants (TA). But if you are at a school
where graduate students teach the laboratory classes or extra sessions
associated with a lecture class (called discussions, tutorials, or
recitations, depending on the school), you will find that this adds
another dimension to your teaching obligations. All too often faculty
members do not think about the mechanics of working with a TA. Table 1
is a set of questions that can serve as a guideline to setting
expectations for your TAs.
TABLE 1: GETTING STARTED WITH a TA
The following checklist describes some of the
duties that you may expect of your graduate teaching assistant. You
should make an appointment to sit down with your TA to discuss which
duties you expect of him/her.
TAs often:
__ Attend class. Distribute
handouts, take attendance, take notes. Administer quizzes.
Operate classroom technology.
__ Run discussion sections
(professor not in attendance).
__ Hold weekly office hours or
review sessions prior to tests or both.
__ Meet weekly with professor
and/or other TAs for the class.
__ Proctor tests, both at
scheduled times and for students who need to take them at other
times. Help document cheating.
__ Type and/or photocopy
quizzes, tests, handouts.
__ Grade homework, quizzes,
exams. Maintain course grade records.
__ Proofread and comment on
drafts of exams. Write some exam questions.
__ Advise students on the
course, on other academic matters, and on non-academic personal
problems.
__ Assist with class e-mail and
class administration.
__ In lab courses, run a lab
section without the instructor present. Participate in setup and
cleanup.
__ Accompany field trips.
__ Run library errands and
sometimes other errands.
Specific points to think about and discuss with
your TA
__ The TA may need a copy
or access to the class roster for grading purposes.
__ Do you plan to make old
tests available for students to study from?
__ How are tests administered
and who will be present? Any special procedures enforced to
prevent cheating, such as alternate test forms, showing IDs,
etc.?
__ Who will do the grading? Who
writes the key to the tests?
__ How are tests handed back?
Who handles student questions about grading? What is your
policy on regrades and grade changes? How/where are grades
posted?
__ How do you plan to tell
students what their letter grade is during the semester?
FOR DISCUSSION SECTIONS:
__ Are discussions required
or mandatory? Will discussion attendance be counted in the
course grade?
__ Who sets the agenda for
discussion section meetings?
FOR LABORATORIES:
__ In laboratories, who handles
stocking materials if the labs run short in the middle of the
week?
__ What special procedures do
you need to know, such as safety and checking out
equipment?
Improving Your Teaching
-
Find an on-campus mentor, ideally one who has
taught in the same area.
-
Connect with your school’s Center for Teaching
Excellence (CTE) or equivalent. They can be an invaluable resource.
They usually have classes to teach you how to use the campus
technology, such as course management software (e.g., Blackboard)
and classroom response systems. Many CTEs will video your class,
then sit down with you and give constructive feedback on how you
might improve your teaching. (Aside: Our CTE professionals were
appalled by how much vocabulary/jargon is used in the average
biology class – more per session than in the typical foreign
language class.)
-
Consider giving your class an anonymous,
informal mid-semester evaluation of the class and your teaching. It
can be as simple as “What do you like best about the class? What do
you like least? What can I do to improve the class this semester?”
And if the students make constructive suggestions, try to implement
them.
In Summary
This sounds like a lot to remember – and it is. The
bottom line is that teaching should be fun and exciting, something you
look forward to. Don’t worry when you make a mistake. We all do (even
experienced teachers). Maintain your sense of humor, know your options,
and establish a support system of colleagues.
Many thanks to the colleagues who contributed
pearls to this article.
COMMENTS:
Clarification: Additional explanation of the triple roar
The "roar" is the amount of conversation noise in the classroom
when students are talking to each other. It can get so loud that you
sometimes need a mechanism for stopping it, like a police whistle,
two-finger whistle, or cow bell. The roar subsides when students are
thinking, writing/doing calculations, or have run out of something
to talk about. By listening to the volume and what is being said,
the instructor can tell when to interrupt and bring the class back
together for whole-group discussion.
Dee Silverthorn
Don't assume that the students will read the course syllabus
carefully; I would recommend specifically discussing the important
information in the syllabus on the first day of class.
In introductory courses, I find it helpful to give the students a simple
assignment, after approximately 2/3 of the semester has been completed,
asking them to describe 3 concepts that they have learned so far in the
course (e.g., approximately one paragraph per concept, with enough
detail to demonstrate that they understand the concept). This is a very
simple assignment for the students (hopefully!), and it can give the
instructor an idea of the level of detail that the students are
understanding. It also helps to remind the students that they actually
have LEARNED something so far.
Angela Grippo
Northern Illinois University Response: Too true! I've
become so frustrated by students not reading the syllabus or
listening to the discussion of it the first day that I now give a
"syllabus quiz" (with clicker questions) after the 4th class
meeting, when late-add students are all enrolled. THAT makes them
read the syllabus.
Which brings up something else I didn't mention in the article: If
you want students to do something, tack points onto it. Just like
the panhandlers on the street corner with signs that say, "Will work
for food," students should come with signs that say "Will work for
points."
Dee Silverthorn
Although I have minimal teaching experience,
I have already realized that I was going through my lectures WAY too
fast! You have to give students time to absorb the information,
because for many of them this is the first time they have been
introduced to certain concepts. Abandon your fear of “awkward”
silences…they may feel awkward to you but are valuable for the
students to let the information sink in.
Sarah Hoffmann Lindsey
Wake Forest University School of Medicine
Response: Excellent point. Studies have shown that most
teachers do not wait long enough, especially when asking questions.
Here's a link to a nice summary of this topic in the ERIC Digest:
http://www.ericdigests.org/1995-1/think.htm
Dee Silverthorn
1) I, too, teach
a large undergraduate human anatomy and physiology course that often
enrolls up to 300 students, most of whom are sophomores. Many of my
teaching classrooms do NOT have clocks on the wall, and while this
is good for preventing "clock-watching" by the students, it makes it
more difficult to budget my time during class, especially if I'm
responding to student questions on particularly challenging topics.
If my PowerPoint slides are projecting, the computer clock is
obscured. I learned very quickly to bring a watch, timer or cell
phone (on vibrate, as Dee suggests) for my own use.
2) Regarding classroom management, I often have students who arrive
late and distract the entire room by walking down to one of the
front rows before settling in and unpacking their materials. I am
not one to lock the room at class time and prevent students from
entering, but I do request that they respect their fellow students
(and their professor) by coming in with as little noise and
disruption as possible and sitting toward the back and/or near the
aisles.
3) I post my PowerPoint slides online before the class period, but
am very straightforward with my students about the fact that this is
meant as a time-saver for them and they still need to come to class
to learn how the information on the slides will be applied.
4) I am in full agreement with Dee on the point of technology being
wonderful until it fails. I have managed to survive a dead
microphone, but a complete power outage that leaves me in a dark
room with 300 startled students or, worse, a partial failure that
leaves me as the focal point of 300 stares with no slides,
chalkboard or drawing pad, can instill panic. As Dee says, don't let
the students see you flinch. Finish your thought and either move on
with conceptual or integrative information - I sometimes "tell
stories" about the clinical relevance of what we were discussing -
or dismiss the class in an orderly fashion in the case of the
blackout.
Kristin Gosselink
University of Texas at El Paso
Response: In cases of
complete power failure in rooms with no windows, cell phones make
good flashlights to see your way out!
Dee Silverthorn
On the first day of my large physiology class
for biology majors, I have the students in small groups write one or
two questions that they have about physiology and sign their names
on an index card. I recopy the names after day 1 and use the cards
to call on the students by name during the semester. I always call
3-4 names for possible answers (assuming that some of them may still
be sitting near each other from day one), so that after a think,
pair, share activity, no one has to own up to their own opinion but
can speak for their group’s opinion.
Barb Goodman
University of South Dakota
Never underestimate the power of 'Show and Tell'. I've
found that the students enjoy the items that I bring to class for 'show
and tell'.
-
I bring 2 boxes of Morton salt to indicate the
amount of salt filtered per day at the glomerulus = 886 grams or 3.2
pounds.
-
Also, 2 50-ml conical tubes represents the amount
of sodium chloride in the entire extracellular fluid space = 140 g.
-
The amount of salt excreted in the urine is
approximately 5.8 grams which is two 1.5-ml Eppendorff tubes.
-
To demonstrate the amount of glucose filtered at
the glomerulus each day = 0.5 pounds, I bring a Ziploc bag filled
with glucose.
-
To demonstrate the volume of water filtered per
day, I show pictures of nine 5-G spring water bottles in the
PowerPoint presentation.
-
To demonstrate the total glomerular capillary
surface area, I bring to class 10 sheets of 8.5 X 11" banner paper =
6,000 cm2.
-
The filtration area is represented by the fenestrae,
which is ~10% of the total surface area.
-
Also, to demonstrate angiotensin II-induced
vasoconstriction of the renal arterioles, I play a movie from my
research laboratory.
Lisa Harrison-Bernard
Louisiana State University Health Sciences Center School of Medicine
in New Orleans
I retired about 5 years ago. I always believed that experience was the
best teacher. Since students could not gain a lifetime of experience, I
interspersed my lectures with appropriate stories. The idea was to make
them so real that they became a part of the student’s mind. For example,
when talking about ventricles of the brain, I told of the origin of the
Holter Co. John D. Holter was an engineer whose son developed
hydrocephalus in 1956. He was told, according to the stories that I
heard, his son was going to die. He asked why someone didn’t install a
valve. He was told that such a valve did not exist. He went home and
designed the valve that saved his son. The story provides the student
with real life events that show the circulation of CSF and how it is
drained.
Another teaching technique I used was in a course in nutrition. The last
two lectures were dedicated to student presentations. I had them do
about 15-20 minutes on a cuisine. The first thing that I was asked was.
“I am Italian, can I do Italian food?” I told them that they could
because they already were experts on that cuisine. But I told them that
they had to go back to parents and grandparents to learn from them about
customs and legends. They then asked if they could bring in samples of
various foods for the class. I permitted it. Students really enjoyed it.
However. the administration did not understand what I was trying to
accomplish. First, I got students in front of a group talking about a
subject with which they were completely comfortable. The students
sharing samples of the food was “breaking bread” with the other
students, sharing food.... very basic psychological stuff about food.
The administration did not understand. I thought they did understand....
Anyway, it was one of the reasons they offered to buy out my
contract.... In the long run, I miss the teaching...
but the caveats are that when using really innovative teaching
techniques, make sure that the administration really understand what you
are trying to accomplish.
Zalmon Pober
Response: Dr. Pober's point about making sure
the administration understands what you are doing is an excellent one.
When we looked at why faculty in our Integrative Themes in Physiology
project were having so much trouble changing how they taught, resistance
from peers and administration was a significant factor (see
Adv Phsyiol Educ 30(4): 204-214, 2006).
Dee Silverthorn
I wish to express my pleasure for having the opportunity to contribute
to this forum on teaching. I wish that this would continue and then we
all learn from each other and be able to relate our own unique teaching
experience.
Teaching of physiology courses in the medical curriculum in the US is
unique and teachers can easily determine the student level of coverage
of its topics. However, not all courses in biological sciences
(including physiology) are taught in medical schools or in the US. Even
at medical schools in Western Europe and North America that follow an
integrated medical curriculum, a teacher needs to determine the level of
coverage in these sciences at the beginning of a course. At other
institutions of higher learning and with introductory level courses,
this is a must. Apart from the adopted official/institutional evaluation
of teaching by students, a simple course-specific feedback is very
valuable to instructors in the long run.
The following are matters that pertain to my experience of teaching,
which were developed over the years and per circumstances at different
institutions at different geographical locations:
1- A thorough review of the course syllabus must be done with students
in class at the beginning of the course.
2- Teachers ought to provide students with a course calendar that
contains dates of significant activities and course events. Such should
be provided by the end of the first week of the course, at the latest,
or should be included in a separate sheet of the course syllabus.
3- An initial simple questionnaire that would be completed by each
student is very helpful in determining the approximate level of coverage
of what will be taught in the course. This is of extreme value in cases
where students are having different educational backgrounds and/or at
institutions that have a variety of elective courses. Students identify
themselves by name for this questionnaire, which involves answers to:
student name, university I.D., related courses taken or being taken
concurrently with the course being taught, why the student is taking
this course? and what does the student expect from this course?
4- In regard to deadlines for major assignments and
examinations, reminders should be made to students within ample time,
even if such were provided with the course calendar or syllabus.
5- A student feedback form is distributed to all students in class -
which contains questions such as: how did the content of this course
affect your general and specific awareness about the subject matter?,
what did you like the most about this course?, what did not you like
about this course? Also included are requests to provide suggestions for
any improvement(s) about the course and to make any comments about the
course or about its instructor. This end-of-the-course survey requests
students not to provide any of their personal information - i.e.,
anonymous.
Farouk El-Sabban
Kuwait University, Kuwait
When campus clocks and classroom clocks are inaccurate
or conflicting, students may have a problem arriving at classroom on
time. In order to avoid confusion about when class begins, I tell my
students that we will start and end class according to “cell phone
time”. On the first day of the course I ask everyone to get out their
cell phones and confirm that all of us have essentially the same time.
We then agree to use this time as the start and stop point for the
class.
Some of my courses start at 8 or 9
am,
so late arrivals are inevitable. This can be troublesome if late
students want to sit in the front or must step over their classmates to
get to an empty seat. I try to minimize the disruption by setting aside
the last 1-2 rows in the classroom for latecomers. I explain this policy
to the class on the first day of class and gently remind students
throughout the course if necessary. One of the bonuses of this policy is
that it moves the shy students, who like to hide in the back of the
class, closer to the front or the room so that they are one step closer
to becoming engaged in the course.
Jodie Krontiris-Litowitz
Youngstown State University
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