Paul Herder, inventor of the Density Flow Model, is a 20-year veteran earth science educator. National Board Certified in earth and space sciences, he teaches geology and meteorology at Marshfield High School in Marshfield, Wisconsin.

Through the years, Paul has received numerous accolades for his creative teaching methods, including: presented the Outstanding Science Teacher award by the Wisconsin Society of Science Teachers in 2001; named 2002 Teacher of the Year at Marshfield High School; awarded one of the first Crystal Apple Awards for educational excellence presented by the local Chamber of Commerce and Industry in 2003; and presented the Kohl Fellowship in 2005.

He has also coached the high school’s academic science teams to eight consecutive state titles in the National Ocean Science Bowl, two of which were national finalists.

Paul’s motto? “Reward the inquiring mind.”