1. Make it Stick: The science of successful learning, Brown, Roediger & McDaniel, Harvard, 2014.
2. However, in Humour in Pedagogy: How ha-ha can lead to aha! RL Garner, College Teaching, 2006: http://bit.ly/2KpCxVv
3. Motivation to Learn: Igniting a love of learning in all students, Giani & O'Guinn, 2010: http://bit.ly/2HMv5lu