Quote: zooo @ July 2 2010, 12:04 PM BSTBut he was saying it in the first episode. So they heard it then.
I remember the very moment I learned about the phrase 'Eureka', it was Johnny Ball on telly. THAT'S HOW KIDS FLIPPING LEARN!
Exactly, what else are you supposed to do? Every time a character says a new or slightly strange word, stop and explain what it means? Kids will hear it, understand the meaning behind it by the context in which it's delivered, and then they'll know and have learned a new word or phrase.