Computing Distance from GPS points in App Inventor

With App Inventor, you can create apps that use the LocationSensor to get the phone’s GPS coordinates. Some of my students have been writing apps to perform such public services as finding the closest pub from their current location. To compute this, they need to convert to GPS lat/long coordinates into a distance in miles.

To help them, I created these quick and dirty screencasts demonstrating how to find a formula on the web then convert it into an app inventor program: