Here’s a great tool for creating online, collaborative timelines. OurStory makes timelines easy to create and share. Dates with stories and photos can be clicked on to expand to the full entry, so there’s no need to worry about taking up too much space. There are so many ways this can be used: it’s primarily a social site, but it has the potential to work for project presentations, and even as a way for teachers to organize and show assignments. To view an example, check out this timeline of Barack Obama’s life.