Flipgrid is a website that allows teachers to create "grids" of short discussion-style questions that students respond to through recorded videos. Each grid is effectively a message board where teachers can pose a question and their students can post 90-second video responses that appear in a tiled "grid" display. Grids can be classes, sections, groups of students, research groups, faculty groups, or any collection of users interested in a common strand of questions. Each grid can hold an unlimited number of questions, and each question can hold an unlimited number of responses. Questions are short, text-based prompts (think Twitter) that can include basic formatting (such as bold, italic) and links to websites or documents.