Describes an activity for determination of genotype from phenotype using a logic puzzle. The puzzle provides an opportunity to consolidate understanding of the dominant and recessive alleles, genotype and its expression in phenotype. (Author/MM)

Students are introduced to indirect proof by a method of discovery. Initially, they are confronted with an intractable puzzle that they must either solve or expose as a hoax. Guided by timely clues, they are unwittingly led to discredit the puzzle by applying the strategy of indirect proof.

Hexaflexagons (or flexagons) have a magic that has enthralled some of the greatest minds for over half a century. Their name comes from "flexible hexagon", which is the form in which they were first discovered by their inventor, Arthur Stone, an English graduate student at Princeton in 1939. In this article, the author talks about using flexagons…

This article describes the connection between a novel puzzle and uses of algebra to generalize the fewest moves to solve it.

The process of diffusion is described as the movement of a substance from an area of high concentration to an area of low concentration. In this article, the authors present a novel way to introduce students to diffusion through the use of an analytical puzzle. This exercise engages students in active learning through a thought provoking exercise…

This Solar System Puzzle Kit for grades 5-8, allows students to create an eight-cube paper puzzle of the solar system and may be duplicated for classroom use or used as a take home activity for children and parents. By assembling the puzzle, hand-coloring the bodies of the solar system, and viewing the puzzle's 12 sides, students can reinforce…

Five puzzles in which mathematical terms must be found in arrays of letters are presented. (SD)

The introduction of toys reversed the decline of the Valley Falls Branch Library, Cumberland, Rhode Island. (PF)

Five reproducible puzzles are presented which test students' skills in math, visual discrimination, and decoding. (MT)

The article discusses the use and some kinds of games as teaching aids in a classroom environment. (JA)

Reprinted are miscellaneous articles from The Mathematical Gazette dealing primarily with mathematical puzzles and mathematical enrichment. (CT)

Benjamin Banneker, a self-taught African American mathematician, kept a journal containing a number of mathematical puzzles. Explores four of these puzzles, 200 years later, with the aid of 21st century technology. (Author/NB)

This article describes the combinatorial thinking involved in computing one's score in the game of cribbage. It deals only with counting the hand; it does not describe the game in its entirety.

This study explores cultural differences between European American (n = 26) and Asian American (n = 17) parents' attributional ratings of children with Down syndrome. Links were examined among parents' attributions, reactions, and behaviors regarding their child's jigsaw-puzzle performance. Although the children's puzzle abilities did not differ,…