PingPong is a free online polling system that lets you collect feedback in the form of multiple choice, text, or image-based responses. In the short video embedded below I demonstrate the teacher and student views of the free PingPong response system.
Applications for Education
All PingPong activities are single question/ single prompt activities. The single question nature of PingPong makes it good for conducting a quick survey of your students' knowledge of a single concept before or after a lesson. The drawing feature makes PingPong a good option for asking questions that aren't easily answered with a typed response. PingPong offers free Android and iPad apps which make it easier than using a mouse or touch pad for students when they sketch responses to your questions.