Prezi is a great online tool to utilize for presentations. It is able to bring traditional slide presentations to life by linking imagery to motion, which in turn paves the way for a deeper understanding and retention duration. Compared to traditional slideshows, Prezi doesn’t have linear, slide-by-slide display method (unless you design it that way, of course). It allows you to create your presentations in unique ways and even lets you import your existing slideshows for conversion! Also, did I mention that use of this tool is FREE?