Build Simple Python Math Game

I want a python math game built for my son (age 9). Single digit multiplication questions falling from the top to the bottom of the screen. The player needs to answer the multiplication questions before they hit the bottom. A mock up screenshot is attached for reference. - Multiple choice questions - User types in the corresponding multiple choice letter to answer (a,b,c,d). - Keep track of the user's overall score - Give the user some sort of feedback if they get the answer correct or incorrect (for example, it could turn green and disappears if it's right, red and disappears if it's wrong) - Ideally keep a high score that can be reset (if possible) I want the code so I can adjust the game afterwards (e.g., tweak the speed, etc.). I also am teaching my son Python so want him to be able to see how it works. Hoping this is a smaller budget project and can be done fairly quickly. Let me know if you have any questions. Thanks!