Forget PowerPoint! Prezi is easier to use and is far more dymanic in its capabilities - the major one being its ability to be worked on by multiple collaborators via the internet. No more flash drive and emailing sharing techniques. Prezi also has video "how to" instructions. Allowing for students and collaborators to learn, share and work on presentations world wide.
Padlet is an Internet application that works like an online sheet of paper where students can put any content (e.g. images, videos, documents, text) anywhere on the page, together with anyone, from any device.
If you're tired of watching your students' PowerPoint slideshows, have them use Movenote to add video and sound to them. Movenote works with Google Drive, Microsoft mail, Gmail, and Google Docs and on any device. Students open Movenote inside their email program, prompting their camera to automatically be activated. They then add their content (from any document type) and begin recording themselves talking through the information. This is a wonderful tool for the flipped classroom and for having students showcase what they've learned in a particular unit of study. Free registration with an email account is required. If you are a Google Apps for Education district, there is a simple add-on available in Google Drive. There is also an app for iOS devices.
Trello is the perfect tool for organizing anything, from a group project to a science fair to a band trip. Working on iOS, Android, Windows 8, and the web, Trello allows you to brainstorm ideas, set to-do lists, add photos, monitor progress, and keep everyone informed with the latest details. It works especially well with project-based learning activities and group work. Trello does require an email address to register.