MONOGRAPH No. l
Manipulative materials for teaching and learning mathematics
Publication of the Mathematics Council of The Alberta Teachers’ Association
71 – 84
Getting the ‘rect’-angle on mathematical activity
THOMAS E. KIEREN
There has been a large amount of literature and perhaps an even larger amount of activity packages developed for and by teachers and students of mathematics over the last 5 years. The basis for much of this development came from the assumption of the value of individualized instruction and of such adages as “doing produces understanding”, “go from concrete to abstract”, and “discovery”.