This module introduces APIs and accessing data from the web. The students have already dealt with URLs in Module 3 when they access Google Maps. Here we go over apps that call an API then process the data that is returned.
The first app is a Stock Market app that gets data from Yahoo Finance. It works as a first foray into APIs because the data returned is a simple list of comma-separated data. It uses the Web component in App Inventor.
Advanced students can go further and access more complex APIs. Here, you'll need to teach them XML or JSON parsing. I don't have examples of those. (This module is under construction)