Appropriate age group(s):
Preschool and Younger
Elementary School

Description of technique for dealing with temper tantrums:
Once a kid is having a temper tantrum, there's very little talk possible as far as I've experienced but after three warnings that I am going to take over the tantrum, I just pick the child calmly, try to feel as warm as I possibly can and bring her in her room, down on the bed and walk silently to the door, out I go and I close the door. The kid will explode and demand the door be opened but I won't. I just explain to her that until she stops the yelling and demands the door will remain closed and I'll stay silent. It works everytime, but prepare yourself for a stand off, my kid can go on for half an hour before giving up. When she does she usually comes out apologising. Then you do the talking and explaining. Kids need to know who is the boss but I don't believe in force or shouts, I have done it and ended up feeling elderly before my time.

Other suggestions or comments:
Don't talk to the child when you are picking them up, talk up to then, but once you are in the process of taking over, there is no more negotiation, you are taking over! Only talk again when the kid is asking for you or the door to be opened and don't soften. The child stops it all or you are remaining quiet and the door remains closed. It is important.