Part I describes the presentation of six different proofs of the Pythagorean Theorem by groups of three students in a party atmosphere. Part II delineates the analysis behind a student conjecture concerning the area of certain closed polar-coordinate figures. Part III proposes a categorical worksheet for determining when to apply the proper rule…

This compilation consists of 26 consecutive issues of the journal "Seedbed," published from February 1979 through July 1986. Each issue contains articles written by teachers for teachers. "Seedbed" is an outcome of the Teachers' Center Project at Southern Illinois University at Edwardsville. It is designed to be neither scholarly nor trivial. Each…

For many adults, geometry is a mathematics topic that immediately makes sense to them and gives them confidence in their ability to learn, while other adult learners identify geometry with failure. Most adults, however, do recognize the need for measurement, and many have a basic understanding of measurement concepts, although they may need to…

This document consists of two issues of the journal "Seedbed," an outcome of the Teachers' Center Project at Southern Illinois University at Edwardsville. Designed to be neither scholarly nor trivial, each issue is a collection of teachers' ideas that they thought worth sharing with other teachers as "seedlings" to be developed, helping teachers…

This issue contains abstracts and critical comments on 11 articles, plus an editorial comment entitled "A Teacher Shortage?". Studies included concern solution processes on addition and subtraction examples; numerical rule induction; individual differences in performance on manipulative, pictorial, and symbolic tasks; the effect of a…