How do parents handling preschooler throwing tantrums and it's getting more and more frequent? My preschool girl now seems showing her tantrums quite often, showing angry expression and bang the door loudly. We have been talking to her on this issue and it does happen when she is angry.

Naughty corner, make sure you are firm with her. Ignore her if she continue to throw her temper, soon she will know give in, than she will get to play together instead of being alone. School uses this method plus me using together become a very gd method. https://youtu.be/ho1mnyBYMZI if you can find this series to watch, it's very good, she teaches you how to handles different type of kids. And making the method success.