The geometry and algebra of reflections (and of 2×2 matrices) Thomas G. Room OriginalPaper Pages: 53 - 75
A foundation of euclidean geometry by means of congruence mappings Hans-Georg Steiner OriginalPaper Pages: 87 - 90
The development of euclidean geometry in terms of translations Herbert E. Vaughan OriginalPaper Pages: 104 - 110
A logical approach to the teaching of geometry at the secondary level Mario Villa OriginalPaper Pages: 111 - 134
Problems and possibilities in the assessment and investigation of mathematics learning John Williams OriginalPaper Pages: 135 - 149