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In a 2-hour visit how long does someone play with a whisper dish? What can
they do with it? It is robust only in the sense that it's tough to destroy.
It's not robust in the sense that it serves many uses.

Robust is nice, as is inexpensive, but a large rock is both. The rock
provides more opportunities for exploring.

Ed


Ed Sobey, Ph.D.
Global Advocate for Creative Learning
Northwest Invention Center 
(206) 240-1516
www.invention-center.com
www.kidsinvent.com
 
 
 
 
 

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