This week in EDTECH564 we started to build mobile apps using AppInventor. Since I am taking EDTECH534 at the same time and have been using the tool for a few weeks now, I completed this alternate assignment “Ball Bounce” instead of repeating Hello Purr. The original tutorial has a ball on screen that you fling with your finger to bounce off the walls. I extended the app with a colorful background, purposefully overly colorful to try and add some difficulty to the game. I also added a good guy and a bad guy. If you fling the ball into a good guy, you add to the score and the bad guy takes from your score. Additionally, in order to increase difficulty with game play, I increase the speed of the ball with every bounce off a wall. There are also buttons to stop the ball while keeping game play alive and reset the game. The “Score” and ” Speed” labels allow you to keep track of your game play on the fly.