Flipgrid is where your students go to view your topics, record their responses (in a video), and reply to their classmates. Grids can be open or locked and embedded into any website. Topics spark ideas and fuel the conversation.
Prezi is a presentation tool that can be used as an alternative to traditional slide making programs such as PowerPoint. Instead of slides, Prezi makes use of one large canvas that allows you to pan and zoom to various parts of the canvas and emphasize the ideas presented there.