Putting fractions in lowest terms sounds simple, but often it presents difficulties if we don’t have good strategies.
Go to the page under PFD to find the video.
I hope this helps!
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 symmetry and transformations, and investigate the areas of the pieces.”
I really like the area questions.
Has an Activity Sheet.
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 | ||
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| S.22 |
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 of Math 260).
For example…
- You cannot take a bigger number from a smaller number.
- Addition and multiplication make numbers bigger.
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
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