Thursday, March 14, 2013

Happy Pi Day

And a Happy Birthday to that rather famous son of an electrical equipment salesman. When I was looking up a link, I noticed that it has been over a year since I've written anything here on this blog! Too busy with both necessary (did someone say assessing outcomes?) and even more necessary (unbloggable) job-related tasks to even pull out a bunch of semi-written stuff in my draft folder, but I have been blogging parasitically on Matt Reed's blog, usually on the "old" original Dean Dad one. He always produces lots of stimulating things to write more about. I really do need to get back here, though, because there are, indeed, lots of things to talk about. Maybe I should start by updating the census data about who has a college degree that came to mind this week.


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Saturday, February 18, 2012

Excellent advice from an article in IHE about the use of e-mail in the workplace.

I strongly endorse both the main advice and a contrary opinion in the comments. Contradiction? No, because the common thread is to know why you are using e-mail rather than a personal conversation.

The contrarian advice is the important value of e-mail as a written record that can be used for legal backup (even if only with your department head or dean). However, as the main article points out, that message will only be of assistance to you if you think before you send.

And the one thing to think before you hit "send" is that all e-mail is a public record in some states and potentially a public record in others. Always think about how it will be read by anyone in your organization, including board members and (for state schools) legislators.

A key thing to think about with students, but also with many others, is that they might only read the first sentence of your response. Before you hit "send", go back and read that sentence, all by itself, as a stand-alone message to see if it sends a mistaken impression of your main message. I've rewritten an e-mail for that reason alone. We have a tendency to put the main point at the end, like a conclusion, rather than at the beginning, as is proper in a memo. The CYA stuff is always at the end, of course.

It is definitely true the e-mail carries bigger risks than a personal conversation. That is because nuances conveyed by tone of voice are simply absent in an e-mail. A direct, "just the facts, Ma'am" approach common among scientists is particularly risky when used with non-scientist colleagues or students. It comes across as brusque or even rude. That is perfect if your goal is to be rude, but not if you goal is to develop consensus on a policy or decision.

Finally, e-mail can be slower than face-to-face discussions. Something as simple as re-ranking priorities can happen in a minute during informal discussion, but take days as e-mails bounce back and forth asynchronously between members of a committee.


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Wednesday, January 4, 2012

First Day of Class

Amusing and thought-provoking blog about first day of class rituals from Gradhacker at IHE.

I usually waste way too much time on the syllabus and am fighting to get pro-forma nonsense down under 10 minutes. I want to do some physics on the first day.


More detailed comments later, but I also like to give a quiz.


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Tuesday, January 3, 2012

Sense of Progress

I always know when Dean Dad has written a great column: I am composing a reply before I even get to his thesis statement!

That was true for his first post of the new year, about progress and cycles. As soon as he wrote "The one idea of this book is that the feeling of “progress,” even when small, is a powerful motivator." I was thinking about a key part of my teaching style. But then he started talking about ... semesters? Yeah, he has a point there as well. And on one other topic he could have addressed. And another.

Lets take up both my thoughts and his. That will also keep my comment on his blog a bit shorter than normal in a case like this.

Dean Dad's Semesters Question:

Dean Dad asks "How do you handle the lack of a sense of progress that attends the semesterly reset?"

Since I teach a subject that consists of a two-semester sequence, I don't suffer as much as some people because there is a huge sense of progress at each reset. Those that make it through the distillery that is my classroom (not to mention those of my math colleagues) are generally not at the level of finely aged "sippin whiskey", but they sometimes get close! I have come to expect a 90 to 95% pass rate in my second semester class, and it would be higher if I didn't have some students slip in from a nearby university. [And, as noted in my next topic, those students also benefit from the objectively valid sense that they can now learn anything.]

I view the reset in the first semester class as a new opportunity. (I hope the students attempting a second pass through the distillation apparatus see it that way also, rather than repeating their original flawed approach.) Now that "outcomes assessment" and a revise and evaluate cycle are being institutionalized here, there are things one learns from each class that feeds back into the next. I have always done some of that, usually focusing on some specific problem, but the gift of "outcomes" from our accrediting agency has led me to look at the entire course once again with new eyes. That is something I wanted to blog about over break.

In the interim, I'll just say that I concur completely with Dean Dad that "a deliberate focus at the cc level on pedagogical and curricular experiments over time could pay off" in more than one way. It has always been that way for me. So maybe it is a bigger problem for Administrators? They only see the classes being taught, not the students in them, unless something has gone horribly wrong.

My Teaching Version:

I am a huge believer in "small victories". That drives the intense, short cycles I use for homework and increasing use of active learning in the classroom.

That wasn't my original motivation for tightening up due dates or using active leraning. It started my first semester teaching at a CC, following someone else's previous syllabus with homework due on Friday. I quickly saw that students procrastinated so badly that they didn't know what they didn't know until almost a week had passed since a topic was introduced. The lurkers didn't even know that they had no clue what had been going on as the engaged students participated as we did problems on the board. I cut the sets in half, more like the twice-a-week recitation approach I had experienced as a grad TA. Better. On-line homework let me push it further. Sets open up early so they can see what is coming, but the first basic problems on a topic are due within a day or two of when the concept is introduced.

Get an easy one under your belt, and away you go to harder problems.

Ditto for active learning in the classroom.

The only thing I can't seem to deal with is "active failure". Never do the homework, sit with a pencil napping on the paper while texting about something more interesting at that millisecond, refuse to even start a problem when everyone else is working at their desks, or not attend at all. Actually, I view that as a small victory for all of us because someone with an attitude like that should never have thought for one second about becoming an engineer!

My Dean Dad Semesters Snark:

Dean Dad often promotes eliminating semesters, although he always does so with nonsensical references to an agrarian calendar and without ever offering a functional alternative that would allow employers and others to evaluate what students might know. I suspect he wants shorter grading periods tied to competency exams. I ride a similar hobby horse, arguing for shorter terms like those in the "quarter" system that has three 10+1 week terms rather than two 14.5+1 week semesters in an academic "year".

Both of these makes the faculty problem he writes about worse, but does help students get some small victories at the course level unless they don't start attending class until 8 of the 10 weeks have gone by.

Frankly, I have no idea what has driven the movement to semesters other than filling football stadiums from August through November. It certainly seems more of a herd mentality than anything that is research driven.

Overlooked Analogy in Developmental classes:

Some of the more promising approaches to developmental math at a CC make use of the "small victory" approach. Diagnostics locate problem areas, and targeted homework along with instructor feedback -- often in a computer classroom -- attacks that weakness until it is corrected. The alternative, where some students remain forever weak in a particular tiny area as the class moves on, is ultimately fatal in math.

Programs where a student can pass all of it in one semester by working at their own pace appear to hold great promise. They also have the distinct advantage that none of these classes transfer anywhere as college credit, so all we need is a clear way to document internally that they have met the requirements to move into college algebra. That is where other colleges need to know what something on the transcript really means.


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Wednesday, December 28, 2011

Followup on Chinese engineering problems

I'm a big fan of the book "To Engineer is Human", so I can't be too hard on the people involved in the investigation of a bullet train crash in China. (See my previous article and Carl's comment on it) The adults in the room took a serious look at the causes of the accident and they will clearly learn from it.

What I wonder is whether the fawning business media will also learn a lesson: It is one thing to say you have software engineers and quite another to have ones who eliminate dangerous flaws before the product goes into use in an environment where there is a major risk to innocent life. The fact that managers were also singled out for blame brings back memories of the Challenger explosion, where management ignored the pleas of engineers who knew better.

Here's to hoping the same people aren't working on their aircraft.

Aside:
The article appears to blame the crash for reduced spending on their train system, but I suspect this is just cover for the severe budget problems China is facing. What has been bad for low-end retailers in the US has been really bad for China.


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Friday, August 12, 2011

A million actual engineers?

This article about the cause of the many deaths and much disruption caused by a high-speed rail crash in China contained the unsurprising conclusion that there was a design flaw in the system.

This is a reminder that it is one thing to produce a million engineers every year, as we are told they are doing in China and India, and quite another to produce highly competent licensed Professional Engineers with the guts to stand up to management. I wonder how many of those graduates in China are "engineers" in name only.

Of course, incidents like the Challenger explosion remind us that even our system can fail when the engineer can't stop management, particularly politically astute management, from doing something not based on sound science.


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Reflections on 30 years of the PC

Today is the 30th anniversary of the release announcement for the IBM PC. At the time, this was a key breakthrough in standardization of software for individuals and companies, as the platform allowed clones with the same Intel 8080 processor to have the same functionality at much lower cost.

Making the computer into a commodity changed the world, although it almost stifled innovation because money could be made on software without any vision at all. We are incredibly lucky that Apple survived the Lisa to produce the Mac with a mouse and a full GUI interface or we might still be waiting for devices like the iPad.

A long flashback digression. Although I had been programming and using computers for more than a decade at that time (my first access had been to a Honeywell system while in HS, where a teacher ran decks for us when it wasn't being used by the school system), they weren't suitable for writing. Good word processing systems that could handle special characters and equations were extremely expensive and limited to the business world. Our department got a home built using 8" floppy disks running the CP/M system with WordStar. WordStar could handle bold, italics, and greek letters along with superscripts and subscripts, which was like a dream come true when Word was still a dream and WordPerfect was not yet on the market. It still amazes me how many features of WordStar exist in HTML and the hot keys that somehow also appear in Word. (Learning basic HTML was trivial to someone who had used WordStar, since it was essentially a markup language for documents.) Later we bought a PC clone for home use, but the real revolution was when our department got a Mac and Adobe Illustrator as well as Photoshop. This was so far beyond the PC world as to boggle the mind. It is often forgotten how important the Apple consumer world was to the adoption of Adobe products like Pagemaker when PC users were still taping pictures into empty rectangles on a printout. Since our work machines ran one of the flavors of UNIX windows systems and I could use a Mac for fancier graphics, I was never as beholden to the M$ version as some. Now that I have an iPad it irritates me no end that I can't click on a link by touching the screen of a PC or laptop. For me, the iPad's only limitation is that I haven't adapted to either the glass keyboard or the nice portable keyboard for rapid touch typing. Hence the remark below. End of unnecessary digression.

As I commented over at Dean Dad's today, hand-held devices are changing the way we look at computers and what they do for us and how they hold us back.

IMHO, the most important choice today is your keyboard.

For example, M$ bloatware means even really fast hardware takes forever to boot compared to a MacBook, not to mention an iPad. This is a big deal in a classroom, where just booting up the computer can take a substantial part of the between-class time if you find it locked or off. [All of our classroom machines go into a single-user locked mode if left unattended, for security reasons. The only way out is a power-button reboot that takes several minutes.] It is truly remarkable how slow the Vista operating system is, almost as remarkable as how M$ has never admitted it was an utter failure. (I love that if you go to a Windows Vista page, it says you should buy Windows 7.)

A big change from the early days, mostly because of the internet and World Wide Web standardized interfaces, many computers are used only to "consume" information. Examples are the web sites Dean Dad was asking about, or e-mail, or various enterprise systems like our CMS, internal grading or advising systems, and college databases. Most of these involve minimal typing so they work great with a tablet like the iPad. I definitely see this as the future.

But sometimes you need a portable keyboard as nice as the one I am typing on now.


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Tuesday, August 9, 2011

CCPhysicist channels Dean Dad

I never post or comment over on College Misery, but it makes a fun read once in a while to see what a wide spectrum of faculty and adjuncts are thinking. Last week there was a real eye opener that reminded me of what a nightmare it must be to be Dean Dad or my Dean dealing with spineless snowflake faculty.

I'm talking about Candy from Casa Grande on Plagiarism. Sigh. Talk about a failure to think before you write.


When you've put your policy against plagiarism in your syllabus (namely, plagiarism = FAIL), ... (much snipped) ...
WHAT DO YOU DO...When a student STILL decides to plagiarize?
What is your process for dealing with plagiarism?


What do you do? You do what you said you were going to do!

The time to ask this question is before you put it in your syllabus. Did you seriously think that no one would ever cheat in your class? That you would never have to confront a student in something other than a passive-agressive way with just a warning about cheating?

Can you imagine that nightmare that is your Dean's life when students show up complaining that you didn't enforce your policy, or treated two students differently at different times, or violated college policy on plagiarism? Trust me, the cheaters know the rules. Many have been caught more than once and know the system inside and out. You should also.

Aside:
I'm not really channeling Dean Dad. I'm channeling my own Dean. He always reminds the new adjuncts and the old faculty of the importance of having uniform grading policies in your syllabus that are uniformly enforced, ideally with a clear rubric that is built into how you grade but need not be in your syllabus in our science classes. What goes in your syllabus is what you are going to do.

If plagiarism is an important part of your grading system, you need to decide what you are going to do -- consistent with college policy -- and then put what you will do in your syllabus. Then just do it.

There was a lot of good advice and some bad advice (to me) in the comments. Some of the bad advice (to me) might simply reflect the different policies in place at a different college. For example, I don't think an F for the entire course would be enforceable at my college for plagiarizing an essay that makes up no more than 10% of the grade, but I'm not in that business so I don't pay attention to that detail. YMMV.

I rather like our system, where the first instance of cheating gets penalized however you think appropriate (pick up exam if they answer a cell phone, for example) and is final unless they appeal the penalty. In my experience, no one ever does. Second offense gets the full treatment, but my experience is that they can't pass any later test if you are standing next to them. But that is our college's system, not mine, so I won't offer it as advice.

Did I mention that you have the right to seat a student anywhere in the classroom when they are taking a test? One Silverback Snowflake at my college once complained that two cheaters sat in the back row and appeared to have swapped exams. On every test. Uh, try saving a seat for them in the front row on opposite sides of the room on the second test, if you can't catch them in the act the first time.

Oh, and before I close, don't ever hand back the actual assignment that they cheated on. Turn back a photocopy and keep the original in your records.

And if you don't know the trick of turning back a photocopy of their Scantron sheets and keeping the originals, you've never heard about one of the most common schemes for cheating. (Those who like paperwork turn back the originals and keep a copy, preferring to punish those who claim their exam was mis-graded by the machine.) I don't use those infernal things, but I still take precautions to catch anyone who changes or adds a free-response answer after the exam is returned. I can't claim to catch everything, but I think I catch most of them.


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Thursday, July 28, 2011

Vote of No Confidence

Or, should I say, No vote (on the debt ceiling) at all shows no confidence in House Speaker Boehner's leadership.

Decades after learning, theoretically, about how a vote of no confidence works to bring down the Prime Minister in a parliamentary system of government, I finally get it.

I guess it helps to have a front row seat, watching the process in slow motion, rather than just reading about it in a news story.

Of course, Boehner hasn't lost his position as Speaker, nor have fragments of his party joined with Democrats to elect a new Speaker, but his powerful voice seems muted this evening. He let an assistant announce, implicitly, that he can't get enough votes for his budget plan for him to dare bringing it to a vote.

This is a REAL mess now.


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Thursday, July 21, 2011

Special financial aid to start at a CC

Dean Dad wrote an interesting column today about a new program in Illinois that rewards a select group of students who choose to attend a community college by allowing them to carry forward the financial aid savings for use in their third and fourth years of college.

The program is described in detail here. It has a number of interesting features, one of which has the potential to be extremely effective. That feature is the tight linkage between groups of CCs and a specific university. [Note: Some CCs are linked to more than one university, but the one I looked at -- Shawnee CC -- is only linked to SIU-Carbondale.] This, along with the presence of an SIU academic advisor at Shawnee CC (as reported by the Chronicle in an illustration above the paywall) should help with one of the biggest obstacles to effective transfer.

Even at a CC where only a tiny fraction are in AS programs and where most students transfer to one of two universities that have a very strong and clear articulation agreement with us, advising is an ongoing challenge. Program requirements change, and those changes sometimes include courses that don't exist at our college. We are always the last to know, and proper articulation seems like it is usually a semester or two late. (I even know of one case where one course remains a mystery after decades. We have an articulated course, but they seem to want an additional one that is only taught at the junior level. Very annoying.) In principle, we should have two years notice because changes are supposed to affect only students who are freshmen when the change in a course catalog takes effect, but it also affects new (transfer) students immediately. In practice, the university knows about curricular changes when they are proposed, but the CC doesn't find out about them until after they go into effect.

In addition, articulation agreements don't spell out course sequencing, and what might be obvious to an historian might not be obvious to a chemist, and vice versa.

Both of these problems should be reduced by having an employee of the university assigned to the CC. There is nothing like having an expert insider nearby. I know, because I maintain irregular contact with former students who are now in engineering school -- and sometimes their faculty as well -- and this gives me insights that I would never get from the paper record.

Interesting pluses and minuses

The program in Illinois is quite limited. A student has to be admitted to a 4-year university and then choose to attend a (specific, linked) CC to be eligible. You don't qualify if you have to start at the CC for academic reasons, or if your home-town CC is not linked to the out-of-town university you want to attend.

If you have to go to an out-of-town CC, the economics shown in their example are not quite as favorable. Your tuition as an out-of-district student is higher, and the allowance for room and board might not be adequate. However, you will still do better in the long run, just not as well as that example shows.

One might be tempted to assume that students who were admitted to a university will be guaranteed to succeed at a CC, but I would warn against that assumption. The risks of partying or Facebooking your way to an F are still there. They might be higher if the student thinks they are stepping down to a glorified high school. Orientation becomes even more important, as are professors and fellow students who notice who is in class each day. Professors might find new problems to deal with. I know that I have had to make adjustments to deal with kids who come in thinking that an AP class was taught at a college level and pace.

IMHO, setting a professional tone on the first day of class is always important in helping students transition from being childish learners to adult learners.

Cost to the CC?

Dean Dad argues that a program that gives needy (Pell-Grant) students almost a full ride [*] at the CC will "squeeze quality" because it directs the money to "students instead of institutions". The problem, he says, results because "community colleges charge students far less than what it costs to educate them". I couldn't disagree more, and I base this on experience at my CC as well as the even more favorable situation at Shawnee CC in Illinois.

I already made some terse comments about this on his blog, so I will give the promised details here.

First, my experience is that a policy that slightly increases some state scholarships if they are used at a CC (where they go much further) has made us much more attractive to students at the margin -- ones who could get into nearby Wannabe Flagship (or a similarly ranked university in the state) but would be in the bottom half of the incoming class. They follow the money, but find the small classes to be an unexpected bonus and that word seems to slowly leak back into the high schools. (Many don't appreciate what they had until after they transfer. Advertising sometimes has to help make that point.) Similarly, the faculty find that having a broader mix of students, in terms of entering SAT scores, helps everyone in the class. There aren't enough great students to improve success rates all by themselves, but the pool of student tutors gets deeper when you have sophomores who have finished calc 3, and those students learn and help others learn at the same time.

Second, our economics are similar to those in Illinois even if our pay rates for adjuncts and faculty are somewhat higher. Adding students is a net plus at the margin. Shawnee tuition is $92 per credit hour (apparently with no additional fees). Note that there is an extra fee for "out of district" students because local property taxes help support the college.

The state of Illinois maintains a central portal where you can find the FY10 salary report (pdf) for all of the state's community colleges. Detailed tables toward the end show that adjuncts earn $450 per credit hour and regular faculty on overload earn $600 per credit hour (Table 5) for individual classes at Shawnee CC. Those define part of the marginal cost of adding a class, with the rest coming from incremental printing costs (exams and quizzes). You might double the salary cost to get a conservative estimate of the total, based on the rough fraction of our total budget that goes to faculty salaries. However, some major budgeted costs are fixed (we heat and cool classrooms whether they are in use or not) and we have to grow a lot before we need to hire more permanent office staff.

On this basis, a 25 or 30 student class staffed by an adjunct or as a faculty overload will turn a "profit" of well over $1000. More if they use an adjunct. Even more if the students are "out of district", which I consider to be more likely under this financial aid scenario.

Long term is a different issue, because it depends on whether the larger student population is going to stay that way. What if Shawnee has to add another full time professor? Table 2 suggests their starting salary is around $42,000 (lowest) to $47,000 (25th percentile) for the regular 2-semester year that teaches 15 credit hours per semester. According to Table 20, their fringe benefits were under $6,000 (compared to a state average of $11,600 in Table 18). CHEAP! So the regular load of a new full-time professor works out to be about (45k + 6k)/30 = $1700 per credit hour. With only $2300 to $2760 coming in from a class of 25 to 30 students, this does not break even when other staffing costs are included ... but you might be able to cut it close for five lean years.

However, once you are talking about long-term budgets, other intangibles come into play. For example, our state funding formula takes enrollment into account. If we grow relative to other CCs, our base budget will grow. Or, I should say, it will grow if the depression ends.

Other costs:

Dean Dad also referred to this article on financial aid regulations as an example of unfunded mandates. However, as I read the Illinois description, it looks like the state system will keep track of what is owed to the student. I think the new GI Bill and other things are a bigger deal for our college than the basic tracking of student credit hours for a state scholarship, and eligibility is determined by a state office, not us.


Side remark

I've always, both as a HS student and a professor, been around a CC where most students are interested in transfer rather than career programs. I gather from DD's comments that this is rare in the community college world. Perhaps the anomaly is because both places have (or had) a significant vocational program run within the public school system, although there are some other similarities that play a role. Nonetheless, my views here about transfer reflect a situation where the vast majority of our graduates get an AA degree and transfer to a university.

[*] Full ride comment

The example student appears to be one whose FAFSA form leads to a particular maximum state grant along with a Pell Grant. Under the assumption that the student is living at home when at a community college (often a poor assumption), the room and board number is realistic and the remaining $600 can be earned doing work study or with limited work hours that will allow plenty of time for studying. Not quite a full ride scholarship, but close.


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Tuesday, May 17, 2011

Mom scientists in the news

Although the story itself (concerning possible carcinogens in unnamed baby products) is interesting -- albeit the usual promotion of a university of its status as a major research center -- what suddenly caught my eye was what was in the the background as the director of the National Institute of Environmental Health Sciences was interviewed about the results of this study.

Photos of her children (and a grandchild?) next to her two computer screens. [Guess confirmed via a bio turned up by Google.]

I thought "that was a hidden positive part of the story".

Then came the punch line, as we saw a second interview with the lead researcher. At home -- rather than in the classic p.r. laboratory shot used to lead the story -- with her new baby as she explained how she had made the decision to remove foam pads that she no longer trusted from her kid's room. Best of all, she discussed the trade off between fire safety and the risk of known carcinogens (in California, at least), suspected carcinogens, and other chemicals whose risk might not have been assessed because you don't have to prove something is safe vis-a-vis asthma or autism before using it in a product.

The sub text, successful women scientists with families, was there for some to see on the CBS Evening News. You can see the video here for yourself.

The safety issue remains an open one, as this was one of those classic preliminary studies. However, my comment would be that flame retardants are of greatest value if you have lit cigarettes, candles, or an open flame from a gas burner or fireplace near the child's bedding or car carrier. What are the odds of a fire starting in a crib if the parents and the baby don't smoke?


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