Class Info

  • Date: Tuesday, 10/20/20, 4:05 – 5:45pm
  • Meeting Info: The class will meet live on zoom today (password is the same as last time – send me an email if you need a reminder).
  • Exam #2: Exam #2 will take place this Thursday, 10/22/20, during class (review sheet is available here).

To-Do Before Class

  • Don’t forget to bring your conjecture (created as part of the OpenLab assignment Lockhart’s Lament) to class today.

Topics

  1. Topics in Number Theory #2: GCD, Euclid’s Lemma

Objectives

  • Understand and apply the definition of greatest common divisor to prove theorems.
  • View (be exposed to? understand? follow?) the proof of Euclid’s Lemma.

Activities

Meeting recording and lecture notes will be posted here.

Lecture notes:

Lesson-15_-linear-combinations-gcd-Euclid-lemma-Download

Here is a link to a Desmos demonstration on GCD and linear combinations.

A group activity will take place during class.

To-Do After Class

You have a written assignment based on todays material, due in one week. Don’t forget to study for Exam #2, this Thursday!

Homework due Tuesday 10/27: GCD Problems:
Chapter 4: 27, 28
Chapter 5: 29, 31
(Upload link)

Study for Exam #2, taking place Thursday, 10/22/20 (review sheet).

Submitting written work (instructions)

  • Take a picture of each written page of your assignment, and combine the pictures into a single pdf document.
  • Give the document a name that will help me identify it, for example: “JRodriguez-Class1Homework.pdf”
  • Use this upload link to upload your pdf (this link connects to a Dropbox folder, but you do NOT need to have a Dropbox account to use it).