Professor Poirier | D366 | Spring 2024

Author: Kate Poirier (Page 6 of 14)

Week 10 checklist

Monday, April 1 to Sunday, April 7

Lessons

WeBWorK

  • Exponential Functions – Equations
    • If you are entering a natural logarithm on your phone, you might not just be able to type “ln(..)” on your phone’s keyboard, you might have to chose “text input” and then type “ln(..)”. You’ll be able to tell that it registered because your “ln” will be in Roman characters, instead of italics.
  • Exponential Functions – Growth and Decay
  • Trigonometry – Unit Circle (now due 4/14)
  • Trigonometry – Sum Difference and Half Angle Formulas (now due 4/14)

OpenLab

  • Test #2 solutions (coordinate with your group, instructions here)
  • Solar eclipse activity (instructions here)

Other

  • Office hours Monday are cancelled (schedule an appointment if you can’t wait until Wednesday)
  • Mid-semester grades are based on the average of your first two test grades. You can find your mid-semeter grade on your Test #2 paper.
    •  =  Making Satisfactory Progress (test average is at least 60%)
    •  =  Needs Improvement
    • SA = Stopped Attending
  • If you haven’t yet, work through this activity to prepare you to see the sine and cosine functions.
  • You should have received an email from the math department about a “reflection and support” module in WeBWorK. This is separate from your usual WeBWorK homework and will not impact your overall WeBWorK score, though it’s there to help you with the course material. When you click the link in the email and log in with the information you were sent, it will take you to a separate WeBWorK section with two sets. Complete both of the sets for five extra participation points (you’ll get the five extra points only if you complete both sets).
    • Activity Demo – open 3/25, Monday, close 5/13, Monday
    • Activity – open 4/29, Monday, close 5/13, Monday
  • Test #3 will be given in class Wednesday, 5/1 (right after spring break)

(Link for instructor)

Test #2 solutions

Post due Sunday, April 7

The instructions for the Test #2 solutions assignment are the same as those for the Test #1 solutions assignment. Your groups are the same; you already have each other’s emails. Coordinate with your group to determine who will submit solutions for which test questions. Ask your group for help solving the problems you had trouble solving. Reach out to group members to help them solve their problems.

Keep in mind that some of your group members may have already dropped the course.

Group 1Group 2Group 3Group 4Group 5Group 6
RyanChelssieJessicaEmanuel G.MatthewAaron
HermaniMingmingAshleyKemanieMelissaFrancisco
Andrew D.JordanGeorgeRandyVirendraKatherine
RamsesYuriyYinsonJahierSara
Fiyinfoluwa

For your individual post:

  • Title: Test #2 solutions problem #n (where n is the problem number you were assigned by your group)
  • Category: Test #2 solutions – Group m (where m is your group number)
  • In the body of your post, indicate which version of the test you are working from.

OpenLab assignment: solar eclipse April 8!

Comment due April 7

You may have heard that we will have a solar eclipse in the afternoon on Monday, April 8. Solar eclipses don’t happen all that often, so this is pretty special. While New York City is outside the path of totality (where the moon will totally block the sun), we still can expect the moon to cover about 90% of the sun.

It is very important never to look at the sun during a solar eclipse… doing so can severely damage your eyesight!

In anticipation of the solar eclipse, you’ll complete a short activity to help you understand the geometry of solar eclipses.

Watch the short animation above and the two short videos linked here. Then on your own piece of paper, set up and complete the three tables in the Modeling an eclipse section here. You’ll need:

  • 1 sheet of 8.5 x 11 graph paper
  • 2 disks approximately the size of a quarter, one to represent the Sun and one to represent the Moon at perigee
  • One disk approximately the size of a nickel, to represent the Moon at apogee
  • Pencil
  • Ruler

After you have completed the activity, record your results in a comment below (state at which points (si, mj) where a total or partial solar eclipse occurs). Then include answers to reflection questions like:

  1. Have you ever completed an activity to understand solar eclipses before? Did this activity help you understand why we sometimes have solar eclipses and sometimes don’t?
  2. Are you familiar with the difference between solar eclipses and lunar eclipses?
  3. Do you plan to try to see the eclipse on April 8? Do you have a plan to protect your eyes?
  4. Do you have any funny or interesting stories about seeing an eclipse?
  5. Can you imagine what it would be like for a person living in an ancient civilization to experience a solar eclipse? How do you think they would have felt?
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