This is one that David Keeling has introduced to thousands of young people to great effect.
For anything to be remembered it needs a R.I.N.G. to it:
Relevant - why do I need this, how will this help me, how does this affect me, what does it mean to me, WIIFM?
Interesting - The Von Restorff Effect argues that things that are 'novel' and 'high contrast' are remembered easily so make sure the learning has, if not always a wow factor, at least an 'oooh' factor
Naughty - we have great memories for things that are risky, edgy, saucy, odd, bizarre or illegal in several American states. They don't have to share their thoughts, just let them sit there with a far-away look
a Giggle - emotions and memory go together. Laughter whilst learning has been proven in laboratory conditions to improve learning and recall
As David says, use one of these and you will remember; use all four and you will never forget