**FEATURES** |

Counting Pizzas: A Discovery Lesson Using Combinatorics
*Gail Nord, Eric Malm, John Nord* A combinatorics problem involving pizza toppings. |

The Spot Problem: Connecting Points, Connecting Mathematics
*Jeremy Kahan, Terry Wyberg* Using the Spot Problem to illustrate the importance of inductive and deductive reasoning and the connections among algebra, graph theory, geometry, and combinatorics. |

Alternative Geometric Constructions: Promoting Mathematical Reasoning
*Eric Pandiscio* The varied mathematical reasoning involved when a geometric construction problem is solved with three different manipulative tools. |

A Multiplication Algorithm for Two Integers
*C. Pinchback, Damber Tomer* An algorithm from Vedic mathematics has similarities to FOIL and the standard algorithm for multiplication. |

Ratio Analysis: Where Investments Meet Mathematics
*Susan Barton, Dennis Woodbury* The topic of ratio and analysis by which investments may be evaluated. To do so requires the use of fundamental mathematics, problem solving, and comparison of the mathematical results within the framework of an industry. |