I can haz schedule, pleez? November 18, 2011
Posted by mareserinitatis in education, teaching, work.Tags: classes, meetings, schedules, teaching
add a comment
I’ve only got three more weeks of classes, and while I’m enjoying the class, I’m looking forward to having a schedule back.
I’ve never been lucky enough to teach a class that meets at the same time multiple times a week. Instead, it’s usually a situation like I have now: Tuesday morning is hosed because I have class and then office hours, Tuesday afternoon is hosed because I have class in the middle of the afternoon, giving me very little time to accomplish things at either end, and Thursday afternoon is hosed because I have two classes a half hour apart. Oh yeah, and since I’m at the opposite end of campus, I lose about a half hour riding the shuttle down and back…three times a week.
The only time I felt like I really did have a schedule was the one semester where I had three labs in a row. It ate up my entire day and left me devoid of consciousness at the end. On the other hand, it left me with four other days to be productive.
The other problem is that now I am working at a job, on top of classes, so I have meetings. Of course, these have to be scheduled for Mondays, Wednesdays and Fridays. So on the days I am at work for a reasonable amount of time, that time gets sucked up with meetings. And, of course, meetings, like classes, are scheduled mid-morning or mid-afternoon to just perfectly mess things up so that I have no longer than 1 1/2 hours to focus on anything.
I have to say that I’ve managed, this semester, to have the worst of both worlds.
And now we’re heading into the holidays.
Just three more weeks…
“Why is this the hardest class?” November 17, 2011
Posted by mareserinitatis in engineering, teaching.Tags: engineering, geology, hardest class, teaching
2 comments
I’d like to know why I keep getting this question: “Why is your class the hardest?” I got it again today.
Okay…so I’m teaching a freshman skills class to engineering majors. In fact, the department specifically asked to have it’s own sections. If my students are thinking my class is hard, I have to wonder what’s going to happen when they really hit the hard ones.
I got this when I was teaching geology labs, though. My evals came back frequently with comments about how I graded much harder than I needed to, I expected too much for an introductory science class, etc.
The coordinator for the course actually went through and analyzed how each of us graded. It turned out that I had the most lenient lab grades and graded more harshly on the exams. (Honestly, if you read and understood the labs, all you had to do was regurgitate your answers for the lab.) It ended up that my grading resulted in the same average as the other TAs.
I’m trying to find out if I just look mean and intimidating because I don’t get it. I know I demand a reasonable amount of work, and I try to help the students as much as possible so they don’t get frustrated.
But apparently my classes are hard.
Engineers who don’t like to program November 15, 2011
Posted by mareserinitatis in computers, education, engineering, teaching.Tags: matlab, motivation, students, teaching
7 comments
I admit that I’ve set myself up for some major disappointment.
My method of grading has been to basically grade assignments in a binary fashion. Either it’s good enough or it needs to be redone.
The other thing is that I’m determining grades by number of assignments that are complete. There are some required assignments which everyone must do to pass the class. Then there are 9 optional assignments. To get an A, you must complete 7 of those. A B requires six, and a C requires five. I didn’t mention the alternatives.
The last two assignments are Matlab assignments. The one before that is writing up a technical presentation.
For me, I’d much rather do coding than write up a presentation. (Yuck!)
Most of my students don’t agree. In fact, based on my first two classes, it looks like less than 10% will be doing either of the matlab assignments. I’m guessing this will be worse in my Thursday classes because of my cancellation of class last week.
I have to admit that I’m rather shocked…and disappointed. It doesn’t matter what you’re doing in EE: you’re likely going to need to have a good handle on programming.
On the good side, I’ve introduced them to the material. On the bad side, the horse is standing by the water and not drinking.
I’m trying to decide, assuming I teach this class again in the future, whether it’s worth it to develop a somewhat scaled down assignment. Is it better to get them doing a small amount of coding, or is it better to have a bit more breadth in their initial exposure?
Maybe I’ll do an eval at the end of the semester so I can find out. In the meantime, I’m still bummed out that most of them aren’t going that route.
Another approach to multiplication November 14, 2011
Posted by mareserinitatis in math, teaching, Uncategorized, younger son.Tags: arithmetic, math, multiplication, teaching
1 comment so far
My younger boy has been working through multiplication, and the problems he’s doing are getting more difficult, so I decided it was time to start working with the dreaded memorization.
I’ve talked before about simply giving kids multiplication tables to work from. My younger son, however, seems like he’s a little better with memorization, so we took the following approach.
Most kids have a fairly easy time with learning to count by twos, threes, and fives. So that’s where you start. The other thing the child needs to know is how to add with carrying. If the child can do that, the rest of the tables are easy. Since counting by 2s and 3s is known, we’ll start with fours.
If you have a problem involving a 4, say 8 x 4, then you have them compute 8 x 2. Once they have the answer to that, have them double it. So basically, once they know all their 2s, they can easily obtain their fours. The same principle goes for 6s and 8s. For a multiplication problem involving a 6, they can either add the corresponding problem with twos three times or take the threes problem twice. Finally, for 8s, they can work from twos to fours, and then from fours to eights.
With the younger boy, this means that if he has a problem like 8×7, he first figures out 2×7. He doubles that answer to get 4×7, and then doubles it again to get 8×7. For him, adding things up goes a bit faster.
For nines, he uses the finger method: he holds down the finger that corresponds to the multiplier, moving from left to right. That is, if he has 3×9, he holds down the third finger from the left. To the left of that finger, he has the number of tens (in this case, 2), and to the right he has the number of ones (7). So the answer is 27.
So what do you do about 7s? Actually, given you have methods for everything else, the only one to memorize is 7×7. On the other hand, if you have a kid that sort of stuck when it comes to commutivity of multiplication, then another way to deal with it is that it’s the sum of the threes problem and the fours problem. (7×7 = 3×7 + 4×7 = 21 + 28 = 49)
Tens are usually pretty easy, so I’ll skip that one.
Eleven and twelve were learned by breaking them into two parts. First, take the number times ten and then take it times one (for eleven) or two (for twelve) and add the results. So 12×9 would be 10×9 plus 2×9.
I’m fairly certain this method would have never worked with my older boy. He has very poor working memory and ADHD, so I don’t think he was able to do a lot of this in his head (and was always resistant to writing it down). For him, I think using a multiplication table was a better approach. For the younger boy, though, who seems to enjoy working through problems and has a very good working memory, this has been a far more, and I might even say quicker, method.
Forgetting how to be inexperienced November 8, 2011
Posted by mareserinitatis in computers, engineering, teaching.Tags: matlab, programming, teaching
4 comments
I learned to program when I was 9. My grandmother gave us an old TI-35 console that hooked up to a TV and a tape deck to record the programs. (Yes, as in cassette tapes…) She failed to get any games or other programs to run, so in order to get anything useful out of it, I had to learn to program.
It was a huge disappointment for me: I’d really wanted an Apple IIc so I could play Oregon trail on the phosphorescent green screen like I did at school. On the other than, with 25+ years of knowledge and experience, I think it was the best gift I could’ve ever gotten. I can make a living programming…but I can’t playing Oregon Trail.
My goal this week was to pass on some of that appreciation of programming to my students. (I guess I can almost say next generation since my own son is just a couple years behind my students. That’s sad.) My informal polling in class has made me realize that only about a quarter of my students have ever programmed in any language ever.
I could have understood this when I was in college…not everyone had access to computers. It seems like the ubiquity of computers doesn’t necessarily mean one will necessarily have experience using them other than at an apps level.
So I decided they should probably get at least a cursory knowledge of a useful programming language. Matlab seemed like a good choice because I know several of the upper-level classes use it. And let’s face it…once you learn to program in one language, it’s easier to go to another.
I found an excellent tutorial. I liked it because it went through things in a fairly basic manor, which I was sure my students could understand. It also had exercises.
Unfortunately, my mistake was thinking my students would be able to read, do the examples, and get a decent understanding of how matlab worked. That’s more or less how I learned it.
Of course…I had already learned other languages when I decided I should learn Matlab. (It wasn’t around when I was 9, you see…)
I was very surprised to find that the most difficult concept for the students to get was how to write an m-file. That is, they didn’t understand that you could write a series of commands in the file and then execute the whole file simply by typing the m-file name in the command window. They wanted to print out the command window or copy and paste their results into the m-file from the command window.
I have to admit that I was impressed with their creativity…but confounded by all the strange things they were attempting.
Finally, I went through a five-minute explanation of the differences between the command window and an m-file, and how the two work. That seemed to clarify what needed to be done for many of the students. When I took this approach with my second class, they seemed very calm and significantly less frustrated than the first class.
I really hoped this would be a positive introduction to programming for the students, but I can tell I’ve managed to make it frustrating for one group. I guess it’s really hard to put myself in their place and figure out where they’re going to have problems. It’s only when I throw some of them in and see how they react that I can change my approach to fit their needs.
Teaching any class for the first time is a frustrating experience.
The dangers of waiting at the bus stop November 1, 2011
Posted by mareserinitatis in engineering, teaching.Tags: bus stop, students, teaching
1 comment so far
I’m not sure how much I’ve talked about it, but after a couple years teaching introductory geology labs, I was rather frustrated. I’m really not sure what happened, but I have wondered if I was really misplaced in that setting. I also didn’t have a great time with intro physics labs, but it didn’t seem quite as bad. There, it seemed like I clicked with some students and not with others. In geology…I just didn’t really click with anyone. I generally had around 85-90% of the students say they would recommend me as a teacher, but it seemed like most of them were tolerating me and/or the class. I suspect that’s probably because it was non-science majors taking a science class.
It’s been a relief, therefore, to get back to teaching in engineering. I’m not sure what it is, but the kids seem to have this sense that the things I’m presenting may actually have an impact on their future. And maybe it’s just because aspiring engineers are more organized than their non-technical college student counterparts.
What’s most amusing is that I usually have one or two students who like to hang around and just talk after class. I can count on spending at least 20 minutes after almost every class talking with one or two students. I’m not sure if they’re lonely or just seeking advice…but it’s a bit odd.
Today, after I finally broke away from my Tuesday afternoon class’ talkative students (one student, in particular, even kept talking to me as I walked to the office) was an even more interesting incident. I was waiting for the bus to go back to the north end of campus. In the approximately five minutes I stood there, I had three more students come up and talk to me about what was going on in class or ask me questions about things.
On the one hand, I’m very glad that students feel comfortable talking with me. On the other hand, it’s a bit frustrating trying to remember who the person is when you have 90 students, no frame of reference as to which section they’re in, and you’re bad with names.
The right way to give a presentation September 18, 2011
Posted by mareserinitatis in education, engineerblogs.org, research, teaching.Tags: powerpoint, presentations, teaching
1 comment so far
I reposted my PowerPoint rant a couple days ago on EngineerBlogs. In it, I basically discuss how people give presentations like they are papers.
Part of the reason this bothers me is that there is research showing that text-filled slides not only make it difficult to understand, they can actually impede learning. Our brains don’t process things in parallel, and when we’re trying to deal with two different forms of language, it puts too much stress on the brain’s verbal pipeline. It doesn’t take much to max out that capacity.
So that means don’t use powerpoint, right?
Wrong. In fact, I highly recommend using PowerPoint…but not for what you think.
Humans are very strongly visual, and even those who seem to do better with verbal topic matter still will learn best with information presented in a visual format. Therefore, go to town on PowerPoint – just without words. Your slide show should be replete with pictures and diagrams. In some classes, I can’t imagine NOT using this type of resource.
When explaining something, talk. In fact, talk a lot. And then, when you are done talking, write out a summary on the board while NOT talking. This serves two purposes: first, you’ll repeat the information in a different form, making it more likely that a student will remember it. Second, some students are going to have problems with auditory processing, so a summary really helps them.
The temptation is usually to write a lot out on the board or to put them into a slide show. This is probably not going to help, especially if there is someone talking over the text. If you have a lot to write, my method is to provide very detailed notes electronically after the class. They can review those to get all the details they may have missed.
Therefore, the proper way to give a presentation is use slides with pictures, speak to describe the scenario, and then write short summaries on the board. Don’t put text on your slides, and certainly don’t talk over any writing, whether it’s on the board or on the slides (which you don’t have, right?).
College is easy September 7, 2011
Posted by mareserinitatis in education, engineering, teaching.Tags: education, overconfidence, students, teaching
add a comment
Over the last couple years, I had run into the down side of teaching: students who don’t want to be there. They come to class with a bad attitude, have no interest in learning something new, and generally complain about how boring and unfair you are. (It’s even worse when you have quantitative measures showing that your grading is not significantly different than your colleagues for the same class, yet students ratings indicate higher levels of unfair grading for you than for those colleagues.)
But that’s what happens when you teach general ed classes, and you learn to live with it.
I recently ran into another kind of student I haven’t seen in a while: the overconfident student. I recently got one of these. He’s been indicating that he’s seen all the stuff I’ve presented, and then told me that college was easy. This particular student comes from one of the larger high schools in the region and thus has probably had access to a lot of classes that have not been available to his classmates. He’s seen things like calc and circuits.
I feel bad for him: he’s likely going to hit a wall at some point.
I know what the typical engineering student will have to go through, and even taking 17-20 credits of 100-level general ed courses doesn’t compare to what happens when you hit some of the ‘weeder’ classes. If you manage to make it through those, the junior and senior level courses can often require overwhelming amounts of time. I can think of at least one class (an optional one) that students will often put in 40 hours/wk on that class alone and end up with a C.
I admit that maybe I’m wrong and he’s just one of those kids who will fly through. In fact, I’m hoping I’m wrong…but I’m also not betting on it. I tried to tell him that it would likely get harder, but I don’t think he was listening.


I also blog at Engineer Blogs, home away from home to some of the best engineering blogs.
An accessory to blowing people up… November 5, 2011
Posted by mareserinitatis in engineering, physics, religion, science, societal commentary.Tags: advising, pacifism, quaker, students, teaching
6 comments
Part of the reason I’m interested in teaching is because I feel like it’s a morally unambiguous effort: teaching helps people to learn, and that is always a good thing. However, I just came across one part of teaching that I don’t feel so good about.
I had a student come to talk to me about advising for coursework. He said that he had difficulty with his actual advisor, and after a few minutes, the guy just signed his card and told him he was done. (The professor is new and apparently has some difficulty with English.) He wants me to sit down and help him plan out his coursework. I’m fine with that. In fact, once we started talking, it was clear he was in the wrong major: his major is computer engineering, and he hates coding. I said the first thing he needs to do is switch over to an EE major because he’ll get a lot more opportunity to work on hardware there, which he said he really likes.
In the process of talking, I figured I should ask if he had any career plans. He wants to do weapons development.
*gulp*
My dilemma is that I feel that because the student asked for help, I should help him. On the other hand, I’m pacifist (or try to be) and don’t feel that helping someone find a way to blow up other people is in line with the Quaker peace testimony.
The best thing I’ve been able to think of is to tell the student that while I am very willing to help him plan out his coursework, I do feel like I need to say I really wish he’d use his intellectual abilities to save people rather than kill them.
The other option, in my mind, is to simply not help him. I have considered this, but I believe strongly in setting an example through action. If I refuse to help someone when they ask, I think I am only going to make this person less willing to try to see things from my perspective.
This is the hard thing about being in technical fields. It’s like knowledge of nuclear processes: it can be used to provide a lot of energy for people, but it can also be used blow people up. By training people in this field, however, there’s likely a non-zero chance you’ll end up with at least one student who does research on making bombs or things like that. So does that make you an accessory to killing people? I really don’t know. And I guess I never really thought about the fact that by teaching engineering students, I could be in this position. I have to say that it doesn’t make me terribly comfortable. Of course, the same would be true in physics.
I realize that most people don’t have this particular dilemma, and it’s one I never thought would come into play with teaching students. I’ve contemplated this a lot because good chunks of my paycheck right now come from military organizations. I’ve tried to look at the things I’m working on and see if these are morally questionable. In pretty much all cases, the things I’ve been working on could easily be used for good things: research into ionospheric physics, devices used for communication that could also go into things like cell phones, and RFID for asset tracking. (I do say that I feel a big funny about working on things that encourage materialism, like the constant push toward new and better cell phones, for instance. I also know that there’s pretty much no stopping it when we live in an economy that only functions because of materialism…but that’s a dilemma for another post.)
It’s making me realize how very hard it is to completely extricate one’s self from things that are morally questionable despite best intentions. Maybe the Amish have it right.