iNaturalist is a community website for sharing pictures and observations of plants and animals. To enable easy sharing of observations, iNaturalist offers a free Android app and a free iOS app. Using the apps you can take a picture, geo-locate it, write your observations, and upload to the iNaturalist community. If your observation is incomplete, for example if you're not sure of a scientific name, you can ask the community to add comments to improve the recording of your observation.
If you don't want to join the iNaturalist community, you can simply explore members' observations through the iNaturalist Google Map.
Applications for Education
I learned about iNaturalist through an excellent post on the Google Lat Long Blog that outlined the efforts of a group to compile a large collection of observations about the Pepperwood Preserve in California. Pick a woodlot or nature preserve in your area and have your school build a record of observations about that area.