Stage: 2 Challenge Level: 
Compound transformations. Generalising. Interactivities. Visualising. Cubes. Investigations. Games. Tangram. Working systematically. Practical Activity.
Published November 1999.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk