**FEATURES** |

Triangles a la Fettuccine: A Hands-on Approach to Triangle-Congruence Theorems
*Patrick Eggleton* An active approach to learning the triangle-congruence theorems. |

How Reform Secondary Mathematics Texts Stack Up against NCTM's Principles and Standards
*Tami Martin, Cheryl Hunt, John Lannin, William Leonard, Gerald Marshall, Arsalan Wares* This analysis of the five NSF-funded secondary mathematics curricula describes their alignment with the Process Standards and Content Standards in Principles and Standards for School Mathematics. Distinctive features and examples are included. |

Using Learning Logs in Mathematics: Writing to Learn
*Margaret McIntosh, Roni Draper* Explanations and several examples of learning logs and discussion about the effective use of learning logs in a mathematics classroom so that students have opportunities to communicate mathematically. |

Just Say Charge It!
*Connie Yarema, John Sampson* The use of a recursive sequence with a graphing calculator to involve students in analyzing credit card debt. |

Determining the Endpoint of a Segment
*Asif Mustafa* A new method for determining the coordinates of the endpoint of a line segment, given its slope, point of origin, and length. |

The Mayan Zeros
*Sheila McNeill* The Maya, one of only two cultures to invent a zero concept, used various glyphs as their symbol for zero. |

Dynamic Visualizations of Calculus Ideas
*Vonder Embse* Three important calculus ideas -- tangent lines, the derivative definition, and the fundamental theorem of calculus -- are explored using Cabri Geometry II. |