O4SR volunteers donate their time and creativity to an activity booth at the 3-day da Vinci Days celebration in Corvallis each year. The O4SR exhibit is filled with mind streatching activities created by O4SR members. This is O4SR’s premier annual public event. It’s fun, educational, and a great way to meet other O4SR members.
Our booth is very popular, and our “blue ribbon” volunteers stay busy running activities such as the world’s only Human Kaleidoscope, a game of strategy based on the Monty Hall 3-Door problem, helping with puzzles, and demonstrating Jerry Andrus’ optical illusions.
Detailed explanations of puzzles and exhibits at the O4SR booth, plus pictures from previous years da Vinci Days:
2006 Exhibits explanations – Web site prepared by Phil Pennington