Ah, stealth teaching. Nothing works better for those slow mornings when everyone is in a lazy mood. Simply leave the right book on the right chair or tab an enticing website to pique their interest. Sometimes I'll test out an educational site only to have a curious child beg me to give them a turn.
I probably shouldn't even write this. They have shown great interest in what I write and draw for my blog. I wouldn't want them to think I was trying to trick them into learning.