Victor Ivrii' Rumblings and Musings

Accrding to https://thevarsity.ca/2021/03/05/u-of-t-planning-for-return-to-in-person-activities-in-fall-2021/ University plans to return to in-person teaching at Fall of 2021.

However to do so, University must ensure that all instructors are not just vaccinated, but all professors 65+ (my pick) are fully vaccinated by BioNTech-Pfizer or Moderna vaccines which provide the best protection. Indeed, in contrast to many professions, instructors cannot teach classes (and some classes are really large) in masks and blackboard teaching of many disciplines (in particular, Mathematics) require full use of the large blackboard, and putting plexiglass shield in fromt of it would, most likely, prevent students from properly seeing what is on the blackboard.

To do this University must ensure that instructors are considered to be essential workers and the second doze of these vaccines is administrated at least 2 weeks before classes.

So far we have not heard anything from the administration.

One of the challenges of online teaching was reorganization of the class structure. Traditionally large class consists of Lecture sections and also of Tutorial sections. In the large classes like MAT244 and MAT334 I have not allowed students to change Lecture section as it could lead to the excess of 300 at Zoom meeting (students got Zoom links only to Lecture sections they were enrolled), in the medium size class APM346 all students got Zoom links to all Lecture sections.

But Quizzes which traditionally are held during Tutorials in Tutorial sections (or sometimes during Lectures in Lecture sections) were reorginized: there were 3+1 Quiz sections in MAT244 and MAT334, and 2+1 Quiz sections in APM346: these sections coincided with the Lecture sections except the last one, held in the time convenient to overseas studemts (in China). And students could select their Quiz section and change it between Qjuizzes (technically through Group mechanism in Quercus).

Similarly, 2 Tests groups were created covering 2 time slots and the similar mechanism was invoked. Unfortunately we were not able to offer Deferred sittings. The reason is simple: in the previous years we had a main sitting, 2 alternative sittings and a deferred sitting which required 4 variants of each test (other classes were less accommodating). But with online testing we had 4 variants in each sitting to reduce cheating and making more was not feasible (too much work for already overloaded Class Coordinator).

With the Final Assessment we offered Deferred sitting.

As one can see this system was much more flexible than the traditional one and it was made outside of the traditional framework.

The very dark cloud of COVID had a silver lining––for University teaching. First of all, we are left with a lot of new materials. Sure,  after COVID, during in-person teaching I will use a blackboard rather than a data-projector; however these slides and test problems (with solutions) will be very useful axillary materials.

But we also may retain an online teaching in some degree. In MAT244 there are 4 Fall and 3 Spring lecture sections (during Fall of 2020, without room availability and size constrains we were able to have 3 lecture sections, getting rid of one really poorly scheduled section). In MAT334 there are 3 lecture sections at Fall and 2 at Spring, and in APM346 1 at Fall and 2 at Spring. Each of these classes can offer 1 lecture section (in year) for online teaching as more economical option for some students.

What about testing then? Should be it online? My answer is “no”. Instead we should use the same model as Princeton GRE and may be existing infrastructure as well: students go to one of the local Test centers (used together by many Canadian and American universities) and write tests proctored by the local staff. Then their papers will be scanned and uploaded to Crowdmark server. Under exceptional circumstances some students could be allowed to write tests at home but they must purchase a camera and pay for professional proctoring.

Teaching load during Fall of 2020 was crushing. I was a Class Coordinator of MAT244 “Introduction to ODE” with more almost 900 students originally (the largest Math class coordinated by Research Stream faculty) and MAT334 “Complex Variables” with almost 500 students originally (the 2nd largest Fall class coordinated by Research Stream faculty). Coordinating each such class is a very significant load, coordinating simultaneously 2 is an extremely significant load, and doing this in the first classes of online teaching was crushing.

Yes, I saved each week about 6–8 hours for commuting but I spent at least 20 hours each week preparing slides; I was not invigilating Tests or Final Exam but I wrote 8 variants of each (for two sittings) and extra 4 variants of the Final Exam (now–Final Assessment) for Deferred Sitting and this increase in variants also consumed far more time and efforts. And administrating those on Crowdmark took also a hight toll.

While making slides was the most time and efforts consuming, preparing and editing other materials required also some time. I had no other choice as at least 20% of students were in China.

Sure, there were Summer classes before Fall but they were taught by Graduate students and teaching staff, and I salute them as a first responders, but they left no materials.

I had several screw-ups with online tests and quizzes (everyone had–we started with zero experience; now I know pitfalls and how to avoid them) and I spent a lot of efforts to fix them.

Agreeing to coordinate 2 large classes I knew that it would not be easy, but I underestimated the load. Still I do not regret this decision: leaving one class to be coordinated by postdocs who were mostly other instructors would be unfair and bad for everyone. My experience with those classes (before COVID) and technical expertise would not be used in the full degree.

This semester my load is much easier: I am teaching and coordinating only one class APM346 “Partial Differential Equations” which has in 2 sections less than 300 students. I have much more experience. And I have my Online Textbook. However even this requires reformatting textbook text into slides (and this requires time since Online Textbook and Slide presentation are completely different medias with rather different requirements). And I am upgrading my Textbook in the process!

Significant help came from few most experienced TAs (who were instructors in Summer classes) and from teaching support staff of the Department.

Very interesting article from MAA:
STUDENT TEACHING EVALUATIONS ARE EFFECTIVE, BUT NOT IN THE WAY YOU THINK, by Keith Devlin

These evaluations positively correlate with the student’s achievements in the current course, but negatively correlate with student’s achievements in the follow-on related courses.

Students of less experienced instructors who do not possess terminal degrees perform better in the contemporaneous course being taught, but perform worse in the follow-on related courses.