To clear the cache on your app mySecondTeacher, follow these steps:

Step 1: Open the Settings app on your Android device.

Step 2: Scroll down and click on Apps.

Step 3: Select App Management from the menu to manage your applications.

Step 4: Search and tap on the app mySecondTeacher from the list.

Step 5: Click on Storage usage to see storage-related options for the app.

Step 6: Here, you will see options for Clear data and Clear cache.

Step 7: Tap on Clear cache to remove the cached data for the mySecondTeacher app.

By following these steps, you will successfully clear the cache in the mySecondTeacher app, helping to improve its performance.