**Some links I like.**

Tangents to the product of linear functions |
Exploring graphs of equations of the form |
The locus of the vertices of a parabola |

Centers of the medial triangle |
GSP script tools |
Properties of the median triangle |

Circles tangent to circles |
The inscribed triangle of minimum length |
The Simson line |

Parametrization in threespace |
The conics in polar coordinates |
Fibonacci and the golden ratio |

Final Assignment