Another free tool to make slideshows--just add images, attribution and comment..will play just like other Web 2.0 tool slide shows and can be embedded on social media or lms (learning management system). Played around with it and it's quite easy.
PaperHelper is aniPad app that allows split screen--search web and take notes on other side ($1.99). This app really makes research online quite easy. Recommend.
If you want to bundle websites (URLs) for your students into one link, this is a really sensible solution. Free and very simple to use--just paste URLs and it links ('stitch it').