Month: April 2020 (Page 2 of 4)
As announced in class, Test #3a and #3b will have three components:
- WeBWorK
- Written work
- One-on-one interview
WeBWorK
As before, your questions will be delivered via Webwork. Test #3a has 5 questions and Test #3b has 5 questions (it will look like 6 questions; the first “question” is an academic integrity statement). The tests will be open for 2 days each. Your timer will count down from 1 hour after you start the test.
One thing that is different from Test #2 is that, if you want, you’ll be able to take a second version of the test within 24 hours of submitting your first version. This is optional. These will be completely different problems. You must submit written work for each version.
Your Webwork score will not count toward your overall grade EXCEPT if you submit two versions of the test; only one version of your written work will be graded: the version with the highest Webwork score. If the two scores are equal, your second submission will be the one that’s graded.
Test #3a: opens Wednesday, April 29 at 12 noon, closes Friday, May 1 at 12 noon (scroll to “Take Test 3a test “)
Test #3b opens Wednesday, May 6 at 12 noon, closes Friday, May 8 at 12 noon (scroll to “Take Test 3b test “)
Please let me know if you will not be able to complete the tests during these times so we can make other arrangements.
Written work
There are several ways to turn your written work into a single PDF document. If you are writing your work on paper and taking photos, place your student ID in the picture.
You will receive an email with a Dropbox File request from me. You do not have to have a Dropbox account (you will not even use your own Dropbox account if you have one). The email will contain a link where you can upload your PDF. Use the same link to upload written work if you take a second version of the test.
You have 10 minutes after your Webwork submission to assemble your written work into a single PDF document and share it with me.
Some good habits:
- as you are working, write the page number at the top of each page;
- write all questions on separate pages;
- write the question number very large and clear;
- if a question goes onto a second page write which number it is and “continued” at the top of the second page.
Your written work will be graded as usual. Don’t forget to check any antiderivatives you take by differentiating. Use good style.
Your written work counts for 2/3 of your exam grade.
One-on-one interview
Deadline to sign up for a time slot: Wednesday, April 29 at noon. Let me know if you aren’t available during any of the slots and we’ll make alternate arrangements. (Peter and Tony: please sign up for back-to-back slots.)
Sign up for an available time slot here. Please don’t move your classmates’ names around after they’ve entered theirs!
Interviews will be conducted over Webex. Links will be shared shortly. Please arrive on time as we have only 5 minutes. Make sure you have your work with you; we’ll both be looking at it. At the interview, I’ll ask you to explain your thought process for one or two of your solutions. Don’t just read what’s written on the page. Your work doesn’t have to be 100% correct, I just need to understand what was going through your mind as you wrote each step. This is a new skill, so practice doing this out loud before the interview.
There will be only one interview for Test #3. You maybe be asked about written solutions on your Test #3a or Test #3b.
You’ll receive a grade out of 5 for your interview component.
Your interview counts for 1/3 of your exam grade.
Academic honesty class policy
We’ve discussed what it means to submit your own work for this class several times, both in person and during online classes, yet there have still been multiple violations. I want to make it clear what is allowed and what is not allowed in our class and what the punishment for breaking the rules is.
Unless otherwise indicated, tests and assignments are now open book and open notes. You may use any notes you have taken for this class and you may use what’s in your textbook.
You may work together on homework assignments but you may not work with anyone else during a test. You may not consult automated problem solving websites or apps on assignments or during a test. This includes anything where you plug in the question and it spits out an answer and/or step-by-step solutions. This also includes Google.
If your work for a Test #2 question suggests outside help, you will receive an automatic zero for that question. If you want to dispute this grade, you must make an appointment to discuss it with me. It will be your responsibility to convince me it’s your work and only your work. This will be your final warning.
If a your work for an upcoming test or exam question suggests outside help, you will receive an automatic failing grade for the course and a report will be filed with the college’s Academic Integrity Committee.
Some comments
- Remember that this semester, you will have the option to change your letter grade for a course to credit/no credit (by a certain deadline). Earning a D grade means you’ll receive credit, just like if you earned an A grade. By committing academic dishonesty, you are giving up the option of receiving any credit for the work you have done this semester.
- I know it’s tempting when you’re taking an exam at home to reach out for outside help. This is natural, especially when you’re already under so much stress and you know your classmates have been cheating. Their cheating will be caught and it will be punished. Committing what feels like a small transgression is a slippery slope, though, and could lead to your being expelled from the college (I’ve seen this happen) so please resist the temptation.
- You need to make sure that your work doesn’t even *suggest* outside help. That means that, for example, if you consult an app that solves the problem for you, and you change things around to try to make it look like your own work, you’ll still be found in violation. You may as well just write your own work.
- For upcoming tests, part of your grade will come from a post-exam one-on-one oral interview with me. You will need to explain your thinking to me, not just read what you wrote (I’ll have a copy I can read for myself). This point here is not to catch you cheating, it’s to prevent you from cheating in the first place. Make sure that you understand every single thing you’re writing down and can explain your thinking to me. If you didn’t come up with it yourself, you won’t understand it well enough to explain.
- We’re all still getting used to this new way of doing things. If you committed a violation in the past, you can take the punishment and move on. I will not hold this against you. I’m still experimenting with the structure of tests and assignments that stay true to our original course, but take some stress off you. Please don’t make me regret these experiments by turning work that is not yours.
- I have the same apps you do. Please don’t pay $9.99 per month just to get caught cheating and fail the course.
5.5 Alternating Series (p.496–502) HW: P. 505: 250–257 all, 261—264 all, 266, 267
5.6 Ratio and Root Tests (p.509–519) HW: P. 522: 317–320 all, 323, 325, 328, 329–335 odd, 349, 351
Webwork: Alternating Series & Ratio and Root Tests due Tuesday
Notes from lecture and office hours: https://www.dropbox.com/s/i58xxrwn4ioapmb/Note%20Apr%2022%2C%202020.pdf?dl=0
5.4 Comparison Tests (p.485–492)
P. 493: 194—197all, 199, 200, 202, 204—206 all, 211 (optional: 222-223)
Webwork : Comparison Tests due Sunday 4/26
Notes: https://www.dropbox.com/s/58bi682wpfinnjl/Note%20Apr%2020%2C%202020.pdf?dl=0
Video: https://www.dropbox.com/s/2kqcysxe0ok5g2p/Lecture%20%26%20Office%20Hours-20200420%201228-1.mp4?dl=0
Not that kind of Weekend Update…
Delays
I hope you are all having a good (or good enough) weekend. I had a very busy week last week and haven’t had a chance to post the pre-class prep lessons for this upcoming Monday and Wednesday yet. We’ll still discuss 5.4 Comparison Tests and 5.5 Alternating Series in tomorrow’s Webex class and I’ll post the video and notes afterward.
I was hoping to return Test #2 to you by now, but I’m sorry to say I still haven’t finished grading. I promise to grade them as soon as I can.
Test #2 “Correction” Videos
I don’t usually accept test corrections after I return tests, but since Test #2 was our first test in this new format, I’d like to make you a small offer to do something different to improve your grade. Instead of traditional test corrections, I’d like you to choose the one question you struggled with the most and shoot a video of yourself walking the viewer through a perfect solution. As long as your solution and explanation are perfect, I’ll replace your test grade for that question with 10/10. Otherwise, your original test grade will remain.
You have lots of freedom for how to shoot your video. You can narrate while you’re recording a screencast on a tablet, you can set up your phone to show you writing on paper…if you think of something more creative than that, even better! We just need to see you writing and need to hear your voice. (Let me know if you don’t have access to the technology to do this and still want to submit something.)
You shouldn’t just read your written work line-by-line to the viewer, you should explain your thinking. You’re the teacher now! Start out the video with a 1-minute introduction to the topic: what is the theory involved in what the question is asking you do to? What formulas will be useful for you to have? Set up the viewer to understand whatever you’re about to write. Then don’t just read your written work, make sure to explain why you’re taking each step you’re taking. Then include a conclusion explaining how you know you’ve answered the original question that was asked. The whole video will probably take about 5 minutes. Here’s a nice example. Pay attention to the narrator’s style. This will take some practice if you haven’t presented your own work in public much, so practice out loud before you shoot.
You’re also going to test out your video on your study group before submitting it. Any group member who gives you helpful feedback on your video will earn one participation point. It can be mathematical feedback about your solution or it can be technical feedback about the quality of your video. You will report who gave you helpful feedback using this form.
You will probably have to re-shoot your video to incorporate your group’s feedback. Don’t worry! Nobody expects you to be an expert the first time you do this!
Once your final video is ready, you can share it publicly online (on the OpenLab or as a public post on YouTube, Instagram, Twitter, or Facebook and share the link with me…if you shoot a TikTok, you’ll need to make sure someone without TikTok–like me–can still see it) and email me the link, or you can share it privately with me using Dropbox. I’ll post the Dropbox instructions here shortly.
- Deadline for showing video to study group: Monday, April 27
- Deadline for group feedback and report: Friday, May 1
- Deadline for final video submission: Monday, May 4
Study groups (check your email from late March for group members’ contact info):
Group 1: Melvin, Fausto, Nafew, Risul, Reuben, Peter, Isaias
Group 2: Anik, Antonio, Parveen, Mariam, Sheriff, Israel
Group 3: Denny, Mamadou, Maftuna, Raisa, Elijah, Joanna
Group 4: Czar, Da Hong, Levaun, Inderpreet, Pablo, Frederick
Group 5: Garvin, Jared, Taraeah, Aarish, Renee, Tony
Test #2 Solutions
You’ll be posting a written solution for one Test #2 question on the OpenLab just like you did for Test #1. You can choose the solution from your video or another solution. Your post will earn you one participation point. Don’t forget to include the Test #2 Solutions category before you post.
Test #2 Solutions due Monday, May 4
Test #3a Review
You’ll be posting a written solution for one Test #3a question on the OpenLab just like you did for Test #1 and Test #2. Your post will earn you one participation point. Don’t forget to include the Test #3 Review category before you post. Choose one of the topics in light green on the new schedule.
Test #3a Review due Monday, April 27
Test #3a will be given on Wednesday, April 29 (details will follow in a separate post).
Handing in your written work
I’m still working on grading your Test #2 and I hope to have your grades to you by next week. As I mentioned, there were some problems having you submit your written work for Test #2 over email, so in the future, we’ll try something different. We’re all still just figuring these things out for the first time!
1. A single PDF document instead of several files
Many of you were able to use a scanning app to send me one PDF of all your written work, which worked very well. The main problems seemed to occur when individual photos were attached to the email, so I’m going to ask you to assemble the photos into one document yourself.
-
- If you have an iPhone/iPad/iPod, you can use the Notes app to scan several pages;
- you can also use the Adobe Scan app, the Dropbox app, or another scanning app;
- you can also create a Microsoft Word document, import the images into the document, and save/print the document as a PDF;
- if you have an iPhone or Android phone, you can use the Dropbox app to scan several pages…you might prefer this because we’re going to try using Dropbox instead of email.
If you are using a tablet and writing your work in something like Notability or OneNote, then please save your work as a PDF (I need the actual file, not just the link to it).
If you absolutely cannot turn several individual photos of your written work into a single PDF document because you don’t have the appropriate technology at home, just let me know and we’ll work something out.
2 . Shared folders instead of email Dropbox file request links
CUNY offers free Dropbox accounts for all students, faculty, and administrative staff. I’m creating folders for each of you in my Dropbox account and will share them with you soon. You can find information about setting up your free Dropbox account here. Notice that you’ll need your CUNY Login information to access your account; that’s the information I’ll be using to share the folders with you.
Edit 4/28: I’ll be sharing Dropbox file request links where you will submit your written work. You don’t have to have Dropbox to upload your files.
I recommend practicing scanning your written work and sharing it in Dropbox (once I’ve shared the folder with you) if you haven’t done it before so you’re not doing it for the first time when it’s really important to get it right.
Webwork Ask for Help
Don’t forget about the Webwork question-answer forum on the OpenLab. Often, a peer leader will be able to answer your question before I can. When you’re on the page for your Webwork problem, if you click the “Ask for Help” button at the bottom of the screen, that link will send you to the page on the forum just for that question, so you can read what people have asked before and their answers. Every question you ask or answer is worth one participation point.
Tutoring
Drop-in tutoring is available from the math department. Scheduled tutoring is available from the ALC. I heard that the ALC is not very busy yet, so now is a great time to schedule a one-on-one appointment with a tutor. Here are the links for for drop-in and scheduled tutoring (also in the menu at the top of this page). If you make an appointment at the ALC, forward me the confirmation email for one participation point.
Test #3
I’ll post more details soon, but I wanted to give you a head’s up: I’m planning on splitting up Test #3 (green topics on the schedule) into Test #3a (light green) and Test #3b (dark green). Both parts will follow the structure of Test #2: there will be a timed Webwork component and you’ll share your written work according to the instructions above.
Test #3a will be given the week of April 27; Test #3b will be given the week of May 4.
5.3 The Divergence and Integral Tests
Textbook PDF pp.471-478
Textbook HW: p. 482: 138–145 odd, 152—155, 158, 159, 161, 163
Webwork: Integral Test and Divergence Test both sets due 4/21 (these two Webwork sets are relatively short, so don’t forget to practice the textbook homework as well).
Notes from lecture and office hours
Video:
https://www.dropbox.com/s/rlz1wsvktafqjzm/Lecture%20%26%20Office%20Hours-20200415%201224-1.mp4?dl=0
Divergence Test
You saw the divergence test briefly in Monday’s lesson.
The divergence test is convenient when it applies. It’s always a good idea to check whether it applies to a particular series before you start trying to use another test for convergence.
5.2 Infinite Series
Textbook PDF pp. 450–459
Textbook HW: p. 466: 67–74, 76, 77, 79, 80, 83–85 odd, 89—95 odd
Webwork: Intro to Series due 4/19
Notes from lecture and office hours: Note Apr 13, 2020
Video from lecture and office hours https://www.dropbox.com/s/dimiyy58j0p36tn/Lecture%20%26%20Office%20Hours-20200413%201207-1.mp4?dl=0
Motivation
Remember that our ultimate goal this chapter is to understand what it means for an “infinite degree Taylor polynomial” to “represent” a function near a point. We said that our first step toward this is to understand what it means for a sequence to converge, how to determine if a sequence converges, and (if a sequence does converge) determine what it converges to. Continue reading
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