Sep 17

You may take Exam I early

Some students are interested in attending the Kappa Delta Pi International Honors Society in Education Conference in Horrabin Hall on Friday, Sept. 21.  Our class (and Exam I) conflicts with some of the conference sessions.

If you would like to take Exam I early, I can set up a time for you to take it in my office on Thursday (we’ll find a time) or on Friday morning at 11 a.m.

If you’d like to do this, make arrangements with me (Dr. Olsen).

Aug 30

Tutoring/Help for Math 260

In the Math Resource Office (MRO – Morgan 209) you can get tutoring and help with Math 260. Hours will be posted in the second week of classes at



Aug 13

Welcome – Fall 2018

Welcome to Math 260!

  1. This website is 1 of 3 websites we use for Math 260. This page has links and SBA Objectives and the SBA Schedule of SBA Quizzes and course announcements.
  2. WesternOnline (WO) – used for the Mastery Quizzes (later in the course)
  3. MyMathLab (MML) – used for online homework practice and online homework for a grade. Please access MML by using WO.  Technical support from MML (Pearson) is 800-677-6337.


Jul 13

Percent Change of the Income Tax Rate in Illinois

In July 2017 the Illinois State Legislature raised the income tax rate from 3.75% to 4.95%.  This change can be described two ways.  “The tax rate increased by 1.2 percentage points.”  or  “The tax rate increased 32%.”

Percent change = change/original = 1.2/3.75 = .32 = 32%

Percent change is the primary way that we (and the media) describe change. When the data itself is a percent, it can be a bit confusing. 

See also:

Jan 23

Pipe Cleaner Number Lines

Pipe Cleaner Number Lines are under PFD Hands On Fraction Activities

Jan 20

Extra Credit Opportunity

As discussed on 1/18/17, you may earn 5 pts of extra credit (to be added to the total of your exam scores). On Monday, 1/23/17, after class those interested will meet in MRO (MG 209) to make some ‘fuzzy stick’ number lines. Dr. O will bring all the supplies. Just show up. If you make a fuzzy stick number line you get 5 pt. You can make a second one, if you wish, to keep.

This is not required.

Nov 18

A couple useful 3D diagrams

Useful diagrams.

Click to open the Word file: 3d-diagrams

Nov 14

You may use a calculator on the Problem Solving Quiz

You may use a calculator on the Problem Solving Quiz.

(Please help pass the word.)

(The Problem Solving Quiz is Nov. 14 & 16, as per the syllabus.)

Oct 03

No Class Fri., Oct. 7, 2016.

Dr. Olsen will be at ICTM on Friday, October 7.  We will not have class on Oct. 7. Written HW will be handed in on Monday.

Sep 07

MML Technical Support

Technical support from MML (Pearson) is 800-677-6337.

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