From the Manufacturer
The TECHCARD line has been designed by David Echold for use in home and school settings to teach design and technonogy. Encourages exploration of key scientific principals like energy, force and friction while building the project. Designed to illustrate many magical aspects of our world, Fascinations products will cause you to react with amazement and ask "What makes that work?" or "How is that possible?" By working with engineers, scientists, magicians and most importantly, kids young and old, Fascinations is proud to bring you the best in truly unique toys and gifts.