Ollie Lovell is a teacher, author, podcaster and entrepreneur. After studying physics and economics, Ollie became a maths teacher in Melbourne where he fed a passion for education research. Recently, Ollie Has written a book on cognitive load theory, Cognitive Load Theory in Action, part of the 'in action' series published by John Catt. In this episode, Ollie speaks to Greg Ashman about cognitive load theory, its implications for teachers and some of the controversies surrounding the theory.