Discoveries in geometry by folding and cutting
Ronald R. Edwards · The Arithmetic Teacher · 1977
Most elementary students have had some experiences in paper folding—either with origami or such simple activities as folding a sheet of paper in quarters or constructing a paper airplane. Also, by cutting and folding, students may have constructed cubes, open boxes, snowflakes, or chains for Christmas trees. Students show interest in such activities and the following series of simple folding and constructing activities may prove both pleasurable and mathematically rewarding. Through these activities, relationships of geometric shapes and regions may be examined; definitions in geometry, reviewed; statements of geometric theorems, visualized; and students' creative talents, exercised.