There it was...an abacus and I couldn't resist. I'm going to get a big bang from the buck I spent at a yard sale this weekend!
Remember Show and Tell..why tell kids what your object is, ask them instead! But instead of having one kid blurt out the answer and then everyone knows, use a Google Form to see who knows what the object is and what it's used for. Dig a little deeper and also ask how kids would find out what it is (if they don't know) and how they would learn to use it. It's a great way to get kids thinking about how they learn.
goo.gl/S1mKH1, a partial screen shot is below.
Need help getting started with Google Forms? Visit the Google support pages for Google Docs and look for "Forms": https://support.google.com/docs/#topic=1360904