Formative is a free, web-based student-response and assessment tool for the flipped, BYOD, or 1-to-1 classroom. After a detailed tutorial, teachers can upload or create assignments that let students type, enter numbers, draw (with a mouse or their finger, depending on the device), upload an image, or answer multiple-choice questions. Teachers can create classes (manually or by filling out a template spreadsheet) and then distribute their assignments to students through classes (including Google Classroom) or via an access code. Students can use accounts (which allows teachers to track their progress over time) or choose to respond without logging in. Teachers can watch their students’ responses arrive in real time via the teacher dashboard, and teachers can send back grades (manually our automatically) and also send longer narrative responses in reply.