Infuse Learning is a great (and free!) tool for formative assessment that works on every device. There's no app! Just go to the website on your iOS or Android device or computer and choose the appropriate login in the top corner. Teachers create an account and students join the teacher's "room". There's no need to create student accounts.
Teachers can ask questions "on the fly" or create quizzes ahead of time. There is a wide variety of available question types including multiple choice, true/false and even a draw response where students can work a math problem or draw a diagram.
The "Interactive Tools" give teachers even more options. InfuseDraw allows the teacher to send a picture to the students to label or annotate and InfuseLink sends a website URL for students to simply click to go to the website.
For more information, check out this video (if reading this via email, click this link to view the video http://youtu.be/-skvqjepU1Q)
What's your favorite digital tool for formative assessment? Leave us a comment!