As you know, here at The Book Chook, I love opportunities to celebrate and weave literature, literacy and learning into special days. Pop Goes the Weasel Day is June 14 and I know you'll all want to be prepared, so here are some ideas. First of all, what IS Pop Goes the Weasel? It's generally accepted to be a children's nursery rhyme, but its exact form and origins are not clear. The version I know goes: Half a pound of tuppeny rice, Half a pound of treacle, That's the way the money goes…