As students, we have all experienced times when we weren't able to follow along in lecture, but everyone around us seemed to be doing fine. Yet we didn't want to raise our hands to ask the professor to slow down and seem like we are behind.
Introducing Query! With this app, students can hit the button to signify that they are confused. The professor is able to see the progress bar with how many students are confused and adjust their teaching pace accordingly. Furthermore, students are able to submit questions anonymously. Questions may then be swiped to the left or right, left being a down vote and right being an up vote. The top 3 most popular questions are displayed at the top of the app so the teacher can answer them. Questions are also automatically deleted after a set amount of time so old questions are not clogging up the queue.