Something that worked really well for us, teach the kid sign language. It isn't just that they are screaming and complaining. They are trying to communicate, and failure to do so is frustrating. I can only imagine how frustrating it is when you haven't learned the emotions, yet.

(And don't let "teach them sign language" think you need to teach full on words. Basic signaling that is agreed between you and them is all I mean. Typically "want" and "hungry" are the only ones you need.)