The transformations found in secondary mathematics curriculum are typically limited to stretches and translations (e.g., ACARA, 2010). Advanced students may find the transformation, twist, to be of further interest. As most available resources are written for professional-level readers, this article is intended to be an introduction accessible to…

Stressed is a conceptual approach to absolute value, based on the visualization of the graphs of absolute-value equations. An important by-product is predicting a graph on the basis of certain constraints. Four worksheets plus teacher comments are included. (MNS)

This booklet is the third in a series of nine from the Teacher Training Institute at Hofstra University (New York) and includes 11 samples of computer program lessons designed to enhance the teaching of secondary school mathematics. An introductory section includes the purpose and rationale for this series of software programs, the role of the…