iPadApps4School.com and Android4Schools.com.
123D Catch is a free iPad and Android app. The app makes it possible to turn your pictures into a 3D model that you can manipulate on your iPad or on your Android tablet.
To create a model with 123D Catch select a physical object that you can photograph with your tablet or phone. Then take a series of pictures of that object as you either walk around it or rotate it slowly as you take pictures of it. Then select the best images from those that you took (20+ images works best) to let Autodesk process and turn into a 3D model for you. Your completed 3D models can be shared to the Autodesk community where others can view and use them.
Applications for Education
123D Catch could be a great app for creating virtual manipulatives to use in a math or science lesson. The app could also be used to create 3D models of interesting landmarks that you visit during a vacation, but that your students would otherwise only see in 2D pictures. Finally, all of the models that you create with 123D Catch can be edited in Meshmixer and printed with a 3D printer.