Measure it!' allows you to estimate the size of anything you can photograph! Whether it's a book, TV, tree, bridge or skyscraper, 'Measure it!' will give you a great idea of how tall and wide it is.
Measure It App Picture:
Picture with a Ruler:
Estimation is always a fun math activity in my experience. Here is an app that might be intersting to use even if it isn't perfect. After taking a picture, the device asks you to put in a picture and resize it to a comparable ratio. Then you pull a virtual measuring tape and it will give you the measurement. Well, if my explanation is convuluted, go to the offical site to see more.
Here is their official video explanation that does a nice job of walking through the use of the app.
Do you see any educational value in an app like this? Thanks for your feedback ...
iKonstrukt has some other interesting apps as well! Check them out at http://www.ikonstrukt.com/