Four ideas for the teaching of mathematics topics are suggested. The suggestions are: "To Prove or Not to Prove--That Is the Question"; "Fun at Christmastime"; "A Simple Technique for Factoring Trinomials"; and "An Alternate Method for Factoring" Quadratic Trinomials." (MK)

Some classroom uses for magic triangles are illustrated and discussed. (MK)

Activity sheets are given that are designed to be reproduced for use in mathematics classes at various grade levels. (MK)

Magic circles, number puzzles somewhat more complex than magic squares, are described and discussed. (MK)

Activities are suggested for setting up a mathematics center for a week or more at a time. The activities relate to weight, counting, puzzles, length, graphing, and ordering. (MP)

Presents a problem drawn from real life that addresses finding a way to cross all seven bridges of Konigsberg, Russia. Illustrates a set of simple examples and an instructional approach in order for students to make sense of a seemingly impossible problem. (ASK)

Presents a cut-and-paste turkey puzzle for students to use that combines the use of card or automated catalog records with the Thanksgiving theme. Students are given Thanksgiving topics and asked to find subjects, titles, authors, or keywords in order to assemble the puzzle. (LRW)

Explores a variety of approaches to solving one geometry problem illustrating the work of teachers, the flow of their ideas, and the diverse areas of mathematics they applied. (KHR)

Describes probability games and tasks to help students educate their primitive intuitions connected with the concept of "fairness" in the outcomes of compound events. (YDS)

Outlines the results of an investigation into whether first year biology students used card game discussions and crosswords provided to help them learn and how useful these resources were perceived to be. Evaluates teaching staff's perceptions with regard to the resources. (Contains 23 references.) (Author/YDS)

Presents a 41-word wordsearch puzzle on describing electron transport and oxidative phosphorylation. (YDS)

Uses tangrams and a seven-piece mosaic puzzle to construct triangles, investigate relationships among them, and compare the results from the two puzzles. (ASK)

A company designs and delivers treasure and scavenger hunts for corporate and institutional clients. Groups are divided into teams that must solve puzzles for directions or clues. The hunts build creativity, teamwork, communication skills, and an appreciation of others' strengths. An insert includes a four-puzzle mini-treasure hunt. (TD)

Presents an activity in which students trace the movement of the continents over the past 600 million years to help them understand how the continents' size and position have changed over time. Includes map puzzle pieces. (MKR)