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The art of origami, or paper folding, is carried out using a square piece of paper to obtain attractive figures of animals, flowers or other familiar figures. It is easy to see that origami has links with geometry. Creases and edges represent lines, intersecting creases and edges make angles, while the intersections themselves represent points. Because of its manipulative and experiential nature, origami could become an effective context for the learning and teaching of geometry.In this unique and original book, origami is an object of mathematical exploration. The activities in this book differ from ordinary origami in that no figures of objects result. Rather, they lead the reader to study...
Specific divestiture dates and institutional public enterprise reform should probably not be a matter of hard conditionality for sectoral adjustment lending. One alternative is to establish institutional development projects that parallel adjustment operations. Another is to establish "primary conditions, " nonfulfillment of which would bring an operation to a halt, and "secondary conditions, " (including most institutional and public enterprise reforms), nonfulfillment of which would evoke sanctions but not end operations.