How to Use a Mini Whiteboard to Check for Understanding

A lot of the shift in my teaching has been about moving from thinking about a class as just a group of individuals and how do I interact with the whole class. And so many whiteboards are about building that sense that we are a class working together and it's about me getting information from the class, not just the student I happen to be looking at or whatever. So if I ask the question verbally I've got I ask one kid and I know that they've thought about the answer but I don't know anything about the other 29 even if I do the most perfect cold call you know everything. But when I use the mini whiteboard then I have a much better chance that students are