Reviews three geometry textbooks in order to examine both the quantity and content of algebra review. Concludes that although the books incorporate a great deal of algebra, much of it is noncontextual review. (ASK)

Discusses solving rotation problems and shows that there is an alternative to using mental rotations or their encoding into verbal terms, namely using geometrical properties. Presents an analysis of the functionality and effectiveness of the different kinds of strategies as a function of the task's characteristics. Describes research to improve…

Uses match sticks to construct various polyhedra in the Euclidian space R3. Formalizes the idea of a match-stick construction and characterizes all obtainable points with such constructions algebraically. Specifies all the constructible ones among the uniform polyhedra. (Author/ASK)

Describes a discovery-based geometry unit that keeps students actively involved in their learning. Highlights how geometry surrounds students every day. (ASK)

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

Presents a class project for creating a time line depicting the history of geometry that includes writing short biographies of mathematicians and summarizing geometric ideas to form an historical perspective. (ASK)

Presents a mathematical puzzle that asks about "missing" area and leads to an exploration of the Fibonacci sequence as well as genuine inquiry in plane geometry connected to algebra. Discusses the inquiry, the concepts, the solution, and an extension that deepens all students' understanding of the connections between algebra and…

Discusses students' progress through distinct levels in the development of their thinking as described by van Hiele levels. Focuses on the quadrilaterals and suggests some level 3 tasks and construction problems. (ASK)

Describes an experiment with two participants, one of which is familiar with the Geometer's Sketchpad but not with Cabri-Geometre and vice versa. Displays the work of both participants when they are given two geometry problems in secret and 20 minutes to work on each, the first with software that they are familiar with and the second using the…

Identifies some trends in geometry teaching and illustrates them with reference to some of the more common software packages and their application and possible implications for junior high school geometry teaching and learning. (Contains 23 references.) (ASK)

During the 1995-96 school year, the author (a principal) and three teachers developed an action research project at a Virginia high school. The idea was to increase curricular articulation among departments and connections among disciplines (art, physics, and geometry) at the school. Teachers overcame two major barriers: lack of common planning…

Presents two problems whose solutions can be enhanced using the Geometer's Sketchpad to solve the problems. Concludes that available computer technology can aid in the analysis and solution of some interesting geometry problems. (ASK)

Explains how geometric constructions can enrich students' visualization and comprehension of geometry. Presents examples of geometric constructions that students can construct using the Geometer's Sketchpad. (ASK)

Activities designed to help mathematics teachers integrate information technology into lessons. Activities are based on using the software package !Draw. (MKR)

Presents five worksheets that contain hands-on geometry activities dealing with the ideas of quadrilateral, trapezoid, parallelogram, isosceles, kite, axis of symmetry, and rhombus. (MKR)