Socrative is an interactive questioning app. While it is to specific to Math and Science I have used it often in both subject areas. The program offers the opportunity for students to work in groups and enter their response to a question that you push out to the linked devices. All answers show up on the display and then in their groups they vote on which answer they think is the best. It allows for lots of discussion and interaction between peers and even if they are unsuccessful in finding the correct answer they get to see all of the answers and then decide why one is better. Great at getting kids talking and talking about their learning and explaining why.