The Lost Math Lessons

As a high school math teacher, I often run across or develop math ideas that are not taught in a typical math curriculum. Here are some of those ideas.

Showing posts with label quadratic equation. Show all posts
Showing posts with label quadratic equation. Show all posts
Tuesday, December 20, 2016

The Imaginary Part of a Parabola

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Parabolas are commonly taught in most high school algebra classes. All parabolas are curves defined by a quadratic equation and are symmetr...
Wednesday, July 6, 2016

The Garden Border Problem

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The following problem is in the McDougal Littell Algebra 2 textbook and is a typical word problem for a section on solving quadratic equat...
Thursday, June 25, 2015

Solving a Quadratic with a Straightedge and Compass

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In most high school algebra classes, students learn to solve a quadratic ax 2 + bx + c = 0 using a variety of different methods.  The most...
Tuesday, December 16, 2014

Factoring ax^2 + bx + c

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Factoring the quadratic expression ax 2 + bx + c is a common component of most high school math curricula.  The simplest type of factorin...
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David Vreken
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