Arielle Alford


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A little bit about me.

Knowles Science Teaching Foundation Portfolio



 Beware Double Crosses: A look at roots, lines, and parabolas

Coefficients, Constants, and the General Equation of a Parabola

 Some Fun with Solutions of Quadratic Functions

Altitudes: A chance meeting or fate?

Script Tools for Geometer's Sketchpad

 Locus of points Equidistant from a circle and a fixed point

Tangent Circles

 Altitudes and Orthocenters

 Pedal Triangle


 Polar Equations

 Lidless Box: Origami Meets Math




Final Assignment

Part A: Bouncing Barney

Part B: Multiple Solutions

Part C: Now and Then - Postage Stamp Price Analysis

EMAT 6690


Mathematical Essays

A Hospital problem

Circle Designs


Instructional Unit: Geometry of Circles

Rationale and Timeline

Lesson 1: Circumference of a Circle

Lesson 2: Area of a Circle

Lesson 3: Parallelogram, Circle, Vertices

Lesson 4: Tangents to a Circle

Lesson 5: Inscribed Angles

Lesson 6: Inscribed Quadrilaterals

Lesson 7: Parallel Chords

Lesson 8: Length of Chord, Distance from Center

Lesson 9: Intersecting Chords

Microsoft Office version of Circles Unit


Some of my favorite links.


The Department of Mathematics Education

MacTutor History of Mathematics Site -- St. Andrew's University

Math Forum (alias Geometry Forum)

Furman University Mathematical Quotation Server

Project InterMath

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