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Am I missing something here? January 27, 2012

Posted by mareserinitatis in education, engineering, science, teaching.
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7 comments

Like everyone else, I came across the article on why college students leave engineering.

I was reading it with my jaw hanging open.  Specifically this:

The typical engineering major today spends 18.5 hours per week studying. The typical social sciences major, by contrast, spends about 14.6 hours.

My first thought was: Where the heck can you go to school and study for 18.5 hrs/wk and still manage to pass enough classes to get an engineering degree?!

My second thought was that it explained something that has been puzzling me.  Last semester, my students complained about the amount of homework I assigned for my 1-credit class.  There was about 1  homework assignment per week, and I figured this meant they’d be spending an average of 1-2 hours outside of class on assignments.

When I started school, the rule of thumb was that 3 hours per week outside of class PER CREDIT was required for an A, two for a B, one for a C.  This meant that if you planned to go to school full time (which was 12 credits per semester) and get an A average, you needed to be spending about 36 hours per week just on homework in addition to your 12 hours of seat time in a classroom.

I also learned that, for some classes, this was a significant underestimate (usually math, engineering and physics classes) while for other classes, it was an overestimate.  I remember one senior-level sociology class that I took where I spent, on average, three hours per week on homework and still came out with one of the highest grades in the class.  This is why I always felt it was a good idea to have a nice balance between technical and non-technical classes: it would even out the homework load a bit.

My understanding of a typical homework load is obviously a couple decades behind.  (Although I am not sure I plan to change my tune any time soon.)  However, I did feel good about one point in the article:

STEM fields (science, technology, engineering, mathematics) have also had less grade inflation than the humanities and social sciences have in the last several decades.

Apparently you can study less in engineering than you used to have to obtain a degree, which I have to admit bothers me a bit.  However, it’s still harder than humanities and you’re more likely to actually have to earn those grades.  Despite the fact that we’re probably pushing STEM fields more than we really need to, I do hope employers take that into consideration.  STEM students have to be more committed to make it through their fields, which are also more technically challenging.  I’d think that should be worth something.

Lessons learned: teachers need organizational skills, too December 19, 2011

Posted by mareserinitatis in education, teaching.
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3 comments

I have now developed a greater understanding of a strange professorial quirk that I observed over the years. I had at least one professor each term who would get visibly annoyed if you tried to give them an assignment at any time other than the first thirty seconds of a class period.

My understanding is due to that fact that I have recently become eligible to join the Super Secret Society of Teachers Who Have Lost a Student’s Assignment.  (I’m suffering from a cold, so I was unable to come up with a snappy acronym.  Please feel free to make an effort on my behalf.)

*headdesk*

When I was teaching geology labs, I was usually teaching four sections each week in a different building. I found that the best way to keep track of student work was to have four plastic filing envelopes. Each envelope was a different color, and I always knew which one to grab before each class.  At the beginning of class, I’d hand stuff back.  At the end of class, it would all get filed away in my envelope.  This was straight-forward, and I never lost any homeworks this way.  The labs were done in class and handed in at the end.  If they had to hand something else in, it went into my mailbox, which was in the same building as my office (but different than the labs).

This semester, I had 90 students in four classes, in three buildings.  My mailbox was in a different building than two of my classes, and all of them were in different places than my regular office.  I usually had two of my envelopes with me (two classes were on Tuesday and two were on Thursday).  Students also had the option of submitting homeworks online, as much as I hate grading those.

What I hadn’t anticipated was running into students who would randomly hand me homeworks between classes, leave them at the department with the admin staff, or all sorts of other unexpected things.  And, as it happens, I ended up misplacing some homework.  In fact, I went through and filed everything on my desk, and still never found it.  I believe it has ended up in the same place that unmatched socks end up…except that paper always ends up falling back out and will likely be found in the spring of 2013 or some similarly odd time.

If I end up teaching this class again, I think I’m going to make it a policy that homeworks be handed in online.  Sadly, this means that I can’t use the stair distribution when grading:

(Thanks to Concurring Opinions for the image.)

I hate grading in front of a computer screen, but I have to admit that it significantly reduces the organizational demands required to keep track of all the assignments.  Lurking in the back of my mind, however, is the idea of having to teach a very large class where homeworks simply must be dealt with the old fashioned way.  (And no, I’m not talking about burning them.)

Grading contracts August 18, 2011

Posted by mareserinitatis in education, teaching.
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Yesterday, I made a comment on Twitter about using a grading contract for the class I’m teaching this semester.  I talked about the specifics of the class in this post at EngineerBlogs.  After posting the comment, @profgears and @27andaphd asked me explain a bit more.  I’d been planning on writing a post about them after talking about how people impute certain characteristics into grades that really aren’t there.  I guess now is as good a time as any.

Contract grading is basically using an agreement between yourself and the student for what grade they will earn in the course.  Typically, this contract allows for some choice on the student’s part, and may even include some input, as well.

Essentially, developing a grading contract means you need to consider a few things:

  • What assignments are essential to meet the goals of the class?  Which assignments are optional, if any?
  • What is the minimum level of performance for these assignments and for the class overall?
  • How much latitude can you give the student in determining how they will fulfill the requirements?
  • How do these requirements fit into a grading scheme?

As an example, I will probably have several assignments which are mandatory and some that are not.  I plan to grade these assignments on a binary scale: Pass or Redo.  If the student wants, they can revise the Redo the assignments as many times as they want until it becomes a Pass.  Most assignments will require a written submission, but there will be the option of completing the assignment through alternate means if the students want to propose something.  Final grading for the course will require that they pass all of the mandatory assignments and, depending on what grade they contract for, a specified number of optional assignments.  If they fail to meet the requirements of the contracted grade, I will assign them the grade which matches what they actually achieved.

The reason I like this system is because it doesn’t place a lot of undue pressure on the student.  I remember that, as an undergrad, I came to the realization that I didn’t have to do all of my assignments perfectly: to get an A, I just needed to do better than everyone else.  That was slightly helpful, except that doing better than everyone else always left me with an uncertain and often moving target (depending on the other students in the class)…which was almost as stressful as striving to get perfect grades.  The student who uses a grading contract can determine what level of effort they need to get the desired grade for a course.  Not everyone cares about getting As, and looking at the requirements at the beginning will get them thinking about where their priorities are within the class and within the whole system of going through school.

Using a grading contract means that  grade assignments aren’t relative to people in the class.  It’s an absolute measurement, and makes it very clear what is expected of the student…while also allowing a level of flexibility usually not offered in a classroom.

It also enables prioritizing: if stuck for time, the student doesn’t have to do *every* assignment, and the instructor can get across (hopefully) what they consider to be the most important topics of the class.

And I like that there’s the option for the student to chose what works for them in terms of assignment fulfillment.  This aspect works best when presenting results for projects.  Do they like to give talks better, or do they prefer writing?  What are the essential parts of making the project successful?

Finally, I have to admit that I have a very selfish purpose in doing this: I get tired of students arguing about getting one point here and there because they are under the false impression that the one point, worth .03% of their grade, may potentially make a difference in the long run.  I really want them to focus on the right things to get good grades, not minutia.

Once you’ve worked out how you want to deal with the contract, each student can sign an agreement stating what grade they are going to work for.  This also gives the instructor an idea of what level of effort they can expect from each student: it gives an explicit statement of how much they hope to take from the class.

There are several places to find information about grading contracts on the web, but this is a good summary of the system.

Grades and what they don’t mean March 25, 2011

Posted by mareserinitatis in education, engineering, physics, teaching.
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4 comments

I tweeted a link yesterday to a paper titled, “Everyone should get an A,” by David MacKay.  I found it an interesting read because the author’s discussion is quite compelling.

Unfortunately, I just can’t get in line with this argument.  As much as I really do like the idea, I can only assume that MacKay is at a university where all the students really are exceptional.  I hate to say it, but I have seen people enter a field of interest where they literally were simply incapable of doing the work or had no scruples about cheating on nearly every assignment.

GEARS already responded that he disagrees with this, too, although I think we differ on the reasons why.  He mentions the dreaded life or death situation.  I personally think this is a fallacy: school of any type is not adequate training when dealing with life or death situations.  People who are likely to be put in that situation are usually people who go into the military, fire-fighting, police work, etc.  The kind of training they do for real life-and-death situations is significantly different than an exam in school, and exams are completely inadequate indicators of this.

Further, there’s the issue that the kind of skills you need in a life-and-death situation aren’t always the kinds of things you need in school.  Every time someone brings this particular argument up, I always think of the above clip from Apollo 13.  Admittedly, a good part of the movie involves problem solving by engineers that include things they did in school.  However, if you look at the astronauts, they learned their skills through repetition of procedure.  And some of the things the engineers were doing probably had very little to do with what they learned in school and involved some raw-problem solving skills, such as the filter issue.  I don’t buy the argument that regurgitation on exams is indicative of good problem solving skills.

In fact, the book Teaching Engineering discusses some of this.  It mentions that students who do well early on in an engineering program are not always the best problem solvers.  They are the best at learning and reproducing processes, which is a set of skills fairly low on Bloom’s Taxonomy.  However, that behavior may shift: the students who are very good early on in an engineering program may not do as well in higher-level courses because they are not as good at synthesis and analysis.  Some B and C students who struggle early on may be doing so because they tend to function at a higher level on Bloom’s taxonomy, while some of the A students will begin to struggle in classes which don’t emphasize pre-learned processes, rote, and memorization.  While this was written strictly about engineering, I would say this is likely true in most fields.

Finally, I think that grades detract from the purpose of the classroom: learning.  I, just like every other teacher on the planet, have had students come up to me and argue over points here and there.  It has nothing to do with whether or not they understood the material or even cared about it: it was because they wanted a particular grade, and the material was secondary.  There are a lot of smart people who could do so much if they weren’t worrying about their grades all the time.

This, to me, means that grades are not always indicative of the ‘best’ students.  A grade indicates that a student has the skills a particular person wants in the class they’re teaching.  Different classes utilize different skills, however, so I don’t know that grades are really reflective of much except that they met the expectations of a particular class.  Without knowing much about the class, you don’t really have any idea of what skills were actually useful.  And, of course, the whole time, they’re detracting from interest in the material.

I’ve now established that I don’t agree with the concept of giving everyone As but that I also don’t put much stock in grades.  So what do you do?!

I guess that I’ve become a fan of the grading contract.  For those who have never heard of this (and I personally have only encountered it in one class my entire career), it is a contract to receive a particular grade.  Generally, there are different requirements for each grade.  Some professors do this as a flexible agreement with a lot of input from the student while others establish what is required for a particular grade.  In reality, this is very much like business: if you have the work done by a particular date, you get paid so much.  If your deadline slips, then it is a lesser amount.

I won’t go into the details of how it works much beyond that (maybe in a later post), but I like the philosophy.  The student has clear expectations set out at the beginning of the class.  They know what is required to get a particular grade.  They can choose if they feel it’s worth the effort to achieve such a grade or if they’re happier with something else.  Either way, the student is now free to worry about the topic matter and material presented in the course rather than the grade they want to receive and how everything fits into the oft unstated or even shifting criteria.

In turn, the professor isn’t responsible for micromanaging the student’s time.  She knows what she can reasonably expect from students. She also has justification for assigning a particular grade, both if the student abides by the contract and if he doesn’t.

This is a more realistic scenario: the student met the expectations given in class, and the grade is merely a reflection of that reality.  The classroom can then return to a place where ideas are the primary concern.

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