A brief look at the way we have progressed in our view of what the universe is like from 100A.D. to 1955A.D.

Presented at the NATM Spring Conferenc in Lincoln, Nebraska on March 28, 1999. It was a hands on workshop presentation.

Presented at the NATM Spring Conference in North Platte, Nebraska on March 24, 2000. Folding patty paper results in surprizing effects representing parabolas, ellipses, and hyperbolas.