I tried Instagram in the classroom after getting some humorous inspiration from Jim Sill in a keynote he gave at the Google Education Summit in Singapore. How can you use it? One way is to have students document the process of learning during an investigation. You can do so by having them post pics to Instagram using a unique #hashtag that you provide to them.
Then, take the photo compilation and create a slideshow using Flipagram. The 'show' can then be shared with the school community using Instagram, Facebook, YouTube, or by embedding it in a web site. The use of these apps puts the power of pictures in the students' hands, and by using tools they know and love, you can create a multimedia presentation that is truly crowd sourced.
Power to the people!
For other ideas about how to use Instagram in the classroom, check out this post from Edudemic.
Watch this video to learn more about using Flipagram.