You are downloading the Sandy Adams XAP file v220.127.116.11 for Windows Phone. Sandy Adams is a free and useful Education app: Welcome to the official Sandy Adams teaching application for the Windows Phone.Check out all kinds of content that interests you. After ... You can now download the offline XAP file to install & try it.
Download Locations for Sandy Adams 18.104.22.168 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Sandy Adams XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.