Jeffb Posted August 22, 2011 Share Posted August 22, 2011 Link to comment Share on other sites More sharing options...
Jeffb Posted August 22, 2011 Author Share Posted August 22, 2011 Cool Ball Illusion: Link to comment Share on other sites More sharing options...
Uma Posted August 22, 2011 Share Posted August 22, 2011 Sweet find! The kids figured out the Shade one within 2 minutes. The Ball one took us by surprise. The Waterfall ... we still can't wrap our brains around that one ... even after watching the "explanation" vids on it. Link to comment Share on other sites More sharing options...
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