Argues that Euclidean geometry should assume the central role it once had in mathematics education, describing a teaching method that uses slides made with superimposed overhead projector transparencies. The method (constituting a game of clues and hints) assumes students understand deduction and the roles of postulates, theorems, and proofs. (JN)

Lists three guidelines for the sound use of manipulatives in teaching geometry. Also describes activities that use manipulatives to teach topics in geometry and measurement and which illustrate the application of the three guidelines. (JN)

This paper explores the role of the teacher in the orchestration of common knowledge and in the interplay between intuitive/empirical and formal aspects within the context of students learning mathematical proof using a dynamic geometry software. The case of a secondary school teacher is discussed through the analysis of her learning initiative…

This is a book about teaching maths to pupils with learning differences, not learning difficulties. Teaching and learning in schools is, and always has been, print based. Other ways of thinking--visual, kinaesthetic, practical--are discounted in the classroom. To become teachers, students must jump over a long series of hurdles, formal and…

Although traditional instructional methods and textbooks mitigate against it, investigation can be a viable alternative strategy in the geometry classroom. Many theorems in geometry, such as Euclidean space, lend themselves easily to student experimentation. (Author/SJL)

Presented are suggestions for teaching metric conversion and the properties of quadrilaterals. (MK)

Presents suggestions, for secondary mathematics teachers, for simple geometric constructions. The suggested constructions use only a straightedge and a right-triangular rule and could be carried out in the classroom. (HM)

This article describes how students (ages 8-16) with hearing impairments can use geoboards to develop perceptions about squares, including: pattern recognition, characteristics of squares, concepts of area and perimeter, and generalizations of those ideas. A step-by-step lesson plan and a student worksheet are provided. (CR)

Describes a teaching method to explain excess burden, a key concept in the public economics field. Demonstrates that changing any relevant variable has the same effect on excess burden when viewed as an area of a triangle under a demand curve or as the value of a mathematical formula. (JEH)