TSA Randomizer App in App Inventor
Simple app building example utilized within CS 005 at UC Riverside.
You may search Google for your own left or right arrow, or use the following arrows I found with the creative commons license. Be sure to rename the files before uploading or use whatever names you save the images as within App Inventor.
Left: https://upload.wikimedia.org/wikipedi...
Right: https://upload.wikimedia.org/wikipedi...