To support an Activity to learn about this scratch game i would have students watch the game and then set out balloons, a bucket and have students act out the game by giving instructions. I would have one holding the bucket, and one person throwing the balloons in the air to catch. one person is then required to give detailed instructions of directions to how to catch the balloons. This would start with one balloon and then increase in numbers to show that we require to program instructions for the outcome of the game to be successful.
Option 1: Design a classroom activity that uses an existing Scratch game and that focuses either on (a) understanding the Scratch program