Drjimo

Author's details

Date registered: January 13, 2015

Latest posts

  1. 3 Great WIU Graduates Teaching MS Math — October 9, 2020
  2. Fun Math Challenges For Kids — March 20, 2020
  3. Infographic: Making Sense of Percent Change — March 18, 2020
  4. America Reads Volunteer Opportunity — August 23, 2019
  5. Welcome to the course — July 15, 2019

Author's posts listings

Oct 06

Archimedes’ Puzzle

http://illuminations.nctm.org/Lesson.aspx?id=2523 “The Stomachion is an ancient tangram-type puzzle. Believed by some to have been created by Archimedes, it consists of 14 pieces cut from a square. The pieces can be rearranged to form other interesting shapes. In this lesson, students learn about the history of the Stomachion, use the pieces to create other figures, learn about …

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Sep 09

Practice Homework Note

Note: The MyMathLab (MML) homework (which is for practice) will be left open through the end of the semester.  This is following a request by a student.  This way it can be practiced later on for exams and the final exam. The graded homework (which are quizzes inside MML) of course have a due date.

Aug 31

Schedule of SBA Quizzes

No Calculators allowed on SBA Quizzes, as a general rule. Occasionally, as warranted, calculators will be allowed. See the Admin menu|Course Objectives for the details of each objective. Standard Date of 1st Quiz Date of 2nd Quiz S.1 S.2 S.3 S.4 S.5 S.6 S.7 S.8 S.9 S.10 S.11 S.12 S.13 S.14 S.15 S.16 S.17 S.18 …

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Aug 25

Note for August 2015 – MML!! ~~ update

To access MyMathLab you do this straight from WesternOnline (WO).  Log on the WO first. (Go to Math 260.) Click the Pearson link.  The following document shows how to do this See http://bit.ly/1Lvo3Ox   – Note: This page was updated slightly on 8/26/2015.  

Jun 08

13 Rules that Expire

Great article from Teaching Children Mathematics,Volume 21, Issue 1, Page 18:  13 Rules that Expire …avoid using these… Overgeneralizing commonly accepted strategies, using imprecise vocabulary, and relying on tips and tricks that do not promote conceptual mathematical understanding can lead to misunderstanding later in students’ math careers. These are good guidelines for teachers (and students …

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May 13

Nice video on symmetry, music, and art

http://www.ams.org/samplings/math-and-music

May 02

19 DIY Ideas for elementary teachers

Some great (low cost) ideas http://www.buzzfeed.com/alessiasantoro/teachers-making-learning-fun-literally?utm_term=.ebqWPMn3R

Apr 27

Conic Sections on Desmos

Go to this Desmos graph https://www.desmos.com/calculator/tsfynm2to8 It shows two each of the four conic sections Circles, Ellipses, Hyperbolas, Parabolas Note: A hyperbola has two branches. Only one is shown in the image.  A cone actually has two frustums.  The image only shows one frustum.   http://www.intmath.com/plane-analytic-geometry/conic-sections-summary-interactive.php

Apr 20

Why the Area of a Trapezoid is What it is

There are six ways to show that the area of a trapezoid is See the following PowerPoint file:TrapezoidArea6Ways

Apr 07

Stacking Cups – Two Stacks

This is a 3-Act lesson. It involves systems of linear equations to model a physical situation.  (This could be thought of an extension of the cup-stacking activity that has been around for some time.  However, I think this lesson can be done without the original, one-stack lesson.) http://www.101qs.com/1897-stacking-cups–act-1#

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