Biography: Fred Kong is the Department Head of Mathematics at Harry Ainlay High School. He has taught high school for over 19 years with stops in Milk River, Wetaskiwin, and San Tan Valley, Arizona. Fred has a combined B.Sc. and B.Ed from the University of Alberta and a Master of Mathematics for Teachers degree from the University of Waterloo. Besides interleaving, Fred is also exploring the flipped classroom model and lightboard video production.