Four days ago I wrote this blog post about using Which One Doesn't Belong? as an activity for my calculus classes. I have had a lot of positive feedback about it and along the way Pam Wilson tweeted this: and that also got a good response. So I decided to take this on. It's a good thing that I'm on March break as this has taken a few (!) more hours than I normally have "free" during the week. Announcing the Which One Doesn't Belong? website at http://wodb.ca/ I really hope that many of you will contribute to the site (some of my children already have!) as that is the only way it will grow. I plan on having my students create their own and will add them - please do the same with your students. You can also follow @WODB?Math on Twitter. 2015-03-20 - Update In order to help you use and create WODB?, here are some links. To help you create: WODB? Template (SMART Notebook) Graph software that I use (produces very clean graphs) To help you use (especially if your students have trouble with right & left): WODB? ABCD Template (SMART Notebook) WODB? ABCD Template - white background (.jpg) WODB? ABCD Template - blue background (.jpg) Please let me know if there is anything else that would be helpful. Also - I am happy to format submissions if you just send in content.