These worksheets provide students an experience with a geometry in which distance is not assigned in the usual Euclidean fashion. (DT)

Meetings at the Third International Congress on Mathematical Education (ICME 3) are described. Results of sessions on international goals of mathematics teaching, curriculum issues, and teacher education are summarized. (DT)

The organization of several mathematics competitions within the United States is described. Sample contest problems are included. (DT)

Methods are suggested for encouraging high school students to write mathematics research papers. Sources for information are discussed, a general outline for the paper is given, grading procedures are described, and several topics for reports are listed. (DT)

An identity for sin x/x is proved. Rate of convergence, a geometric interpretation, and an application from physics are discussed. (DT)

A method is given for determining what months will have a Friday the thirteenth for any given year. (DT)

Partial converses are considered of the theorem stating that in an isosceles triangle, the bisector of the apex angle, the altitude to the base, and the median to the base all coincide. (DT)

Three quizzes designed to provoke the mathematics teacher to self-analysis are presented. (DT)

The author observes that the predictor functions determined geometrically by Ranucci (EJ 090 184) can be algebraically derived, and that capable students might enjoy verifying them. Algebraic formulations and derivations are provided. (SD)

After a brief discussion of Pascal's triangle and description of four methods of hand construction, the author provides FORTRAN and BASIC programs for computer construction based on recursive definition. (SD)

A system for categorizing components of geometry class discussions is described. The unit of observation is the teacher question; responses are coded at four cognitive levels. The system is easier to use than many in the literature; use of it can help teachers develop questioning techniques. (SD)

In a series of exercises students develop designs in which nodes are labelled according to the isolation rules defined. Strategies for creating new designs from known ones, finding the maximum number of isolation designs on a given configuration, and developing larger isolation designs are encouraged. Sample worksheets are included. (SD)