Monthly Archive: April 2015

Apr 27

Conic Sections on Desmos

Go to this Desmos graph 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.

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.)–act-1#

Apr 01

Study plan tips for studying for exams You can earn a LEG UP coupon for creating a study plan and study materials and showing them to Dr. Olsen (within a week after the exam). Exam II Exam III You can earn a LEG UP coupon for having your notebook organized and have it contain a typed cover page.