"I love the fact that the iPad can be used to assess student understanding instantly. I think these Quiz and Poll apps actually give the students the power to direct lessons as opposed to teachers making assumptions about where their kids are at in their learning. Below is a list of apps that allow teachers to create and hold a quiz or poll in their class. A great way to start a lesson to ensure you pitch the lesson at the right level or even to use as a exit poll. Find one that suits you and your students."
Via John Evans, Steve Brophy, Jarad Chittenden