Nearpod is a free app that allows you to share a presentation in real time on student devices. When you swipe to to the next slide, student devices automatically switch to the next slide. Use Nearpod to collect student data–students can draw over an image, answer multiple choice questions, or answer free response questions. You can easily upload existing presentations by exporting to PDF, and importing to Nearpod. The best part of this is that you can present to people from anywhere–as long as you are all online, they see your presentation in real time.