# Arielle Alford

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Knowles Science Teaching Foundation Portfolio

2006

2007

 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 Cycloids 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 7: Parallel Chords

Lesson 8: Length of Chord, Distance from Center

Lesson 9: Intersecting Chords

Microsoft Office version of Circles Unit

NCTM

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