Discusses a number of Theo van Doesburg's paintings concerning arithmetic composition. (KHR)

Describes empirical research into the effectiveness of using concepts and principles of physics in the teaching of geometrical proofs. Demonstrates, tentatively, that proofs from physics could be a viable addition to the mathematics curriculum. (Author/MM)

Proposes a lesson that integrates the volume of geometric prisms and literature as a way to introduce students to the Cartesian diver. Describes activities constituting the lesson and contexts included in the lesson. (KHR)

This paper was prepared in response to the Conference Board of Mathematical Sciences recommendations for the preparation of secondary teachers. It shows how using trigonometry as a conceptual tool in spreadsheet-based applications enables one to develop mathematical understanding in the context of constructing geometric representations of unit…

Shows how the phenomenon of instability in the solution of a system of linear equations can be analyzed both algebraically and geometrically. (KHR)

Presents a project-based interdisciplinary unit involving chemistry, physics, English, and geometry in which students are charged with the task of building a boat that will carry one student across the school's pool and back. (JRH)

Biology and geometry students join forces to investigate a real world problem, recycling and landfill management. (ZWH)

Identifies specific functions that reading, in combination with writing and talking, can serve in mathematical inquiries and contribute to a better understanding of how inquiry experiences can be planned and supported in secondary mathematics classrooms. Analysis of data led to identification of 30 functions of reading that are specific to…

Describes the process of combining two theorems from plane geometry to form the chord-line theorem. In this theorem, the concept of two intersecting chords or extended chords is replaced by a single chord-line. (DDR)

Focuses on geometric solutions of quadratic problems. Presents a collection of geometric techniques from ancient Babylonia, classical Greece, medieval Arabia, and early modern Europe to enhance the quadratic equation portion of an algebra course. (KHR)

Presents a map-projection activity that combines mathematics and geography through investigating the proportion of land and water that covers the earth. Focuses on helping students become familiar with characteristics of different projections or representations of the world while estimating and graphing and encouraging them to investigate the…

Describes a group project that involves geometry and falls into an area of mathematics known as operations research, which is crucial to making decisions in business and industry. Includes problem statements and project assessment guidelines and illustrates solutions. (KHR)

Discusses a project focusing on icosahedrons that combines geometry, structure, graphic design, animation, motion, and mechanical and freehand drawing with ancient Greek catapult mechanics. Includes directions on how to both construct a template and develop the pattern for the icosahedrons. (CMK)

Describes an investigation of polygons and their properties in which students apply very basic understandings of geometric properties. (KHR)