Discovering cognitive science this year has uncovered many misconceptions that I held about how I should be teaching. Through reading, listening to podcasts and discussing on Twitter, I've realised that a lot of the way we do things in schools goes against much of the available research. However, as teaching is not an exact science, we all know that sometimes we have to back our teacher judgement on the decisions that we make, so how do we strike the balance? This talk is for anyone who is interested in learning what the cognitive science research tells us about learning and how it can be applied in the classroom. It will document the case study that I have undertaken in my school. I'll share the challenges I faced when trying to change my practice and what the results have been.