NORTH NEWTON, KAN. -- Bethel College alumni Doug Jones, Boone, N.C., and James Roesler, Hillsboro, Ore., will present lectures at the college’s annual Fall Festival. Admission is free and open to the public. Jones will deliver his speech, "Ladders, bananas and Route 4: Metaphorical illustrations of fundamental math ideas," at 10 a.m., Saturday, Oct. 1, in room 203 of the old Science Hall on the North Newton campus. The mathematical sciences lecture will explain various real-world metaphors to illustrate important mathematical principles, such as mathematical induction and Rolle’s Theorem.

"Mathematics can be both fascinating and robust," said Jones, "with many connections that can open the fundamentally abstract and theoretical nature of the discipline to more everyday experience and application."

Jones graduated from Bethel College in 1975 and then spent 10 years teaching secondary math in Colorado, Kansas and North Carolina. After completing graduate work in mathematics education at the University of Georgia, he directed a National Science Foundation-sponsored research project, related to middle school math teachers at Virginia Tech University in Blacksburg. He spent 15 years teaching at the University of Kentucky and was recently named distinguished professor of mathematics education at Appalachian State University in Boone.

Also on Saturday, James Roesler will present "Forty years of Moore’s Law: How the world’s largest chipmaker continues to set the pace for silicon technology development" at 11:30 a.m. in room 16 of Krehbiel Science Center, also located on the Bethel College campus.

The lecture will discuss ongoing improvements in CMOS logic transistor development that allows Intel to deliver the world’s most advanced process technology. Roesler will review the challenges in improving density, performance and power consumption that must be surmounted with each new process generation.

Roesler graduated from Bethel College in 1990 with degrees in mathematical sciences, physics and German. He received his doctoral degree in physics from the University of Illinois in 1997. He currently works as an engineering manager for Intel.

Bethel College hosts its 35th annual Fall Festival Sept. 29-Oct. 2. Other weekend activities on campus include food and entertainment for all ages, arts and crafts, alumni gatherings, athletic events and the dedication of the new $5.5 million sports complex.