for

**Hieu H. Nguyen**

**Some links I like.**

The Program of Mathematics Education

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

Math Forum(alias Geometry Forum)

Behavior of a Sine Graph |
Behavior of a Parabola Graph |
Quadratic Equations |

Centroid of a Triangle |
GSP Script Tools |
Field Goal Kick Angles |

Assignment 7: Tangent Circles |
Triangles and Orthocenters |
Pedal Points and Simson Line |

Parametric Equations |
Polar Equations |
Interest Rates |