Client: Free; Host: $9.99- If you have multiple iPads in your classroom, Eclicker provides an opportunity to turn your iPad into a classroom response system. Here is how it works: Download the Host app on your teacher iPad. This app will allow you to connect to any other iPad on your network. Put the client app on each of the student iPads. Once the students open their app, they will have to enter your IP address (directions within the app) and it will automatically connect to the teacher iPad. Once the students are connected, you can send different types of questions to the group and gather their responses immediately. The app will also graph correct responses and keep track of how the students are doing. There is also a free desktop app for your computer that will allow you to type up questions via the computer ahead of time and choose your questions from your developed question bank. The main issue I have with this app is that the student (client) needs to manually enter the IP address each time you start a new session. Not too bad for older elementary students, but makes it a bit more challenging for K-2. Overall, well worth the $.