As Saint George is also the Saint Patron of England we benefit of this in the ESL class by talking about castles, legends, knights, kings and princesses, reading books or just listening for fun and enjoyment.
Several weeks ago, I was surfing the net looking for some resources to explain the size of the Universe. This is a really tough topic, specially when the learners are above 10 and you need some "interactive help" to answer this difficult question in English as a Second Language!