How can i prevent tantrums?

You don't: Tantrums are a natural expression of frustration in kids.They may fit because their hand dropped a toy & they want it to work better.They fit when you ignore their pleadings to stay nearby & are afraid you don't love them enough to be their slave. As they age & acquire language skills you can calm them with a promise to do "x" later.This makes them practice patience, a necessary step for growth.

You can't: Well, you could not have kids, I suppose... but realistically, tantrums are a part of growing up. Starting at around a year, children become really po'd when they don't get their way. They don't get it - they feel out of control and just want what they want, when they want it. Have a plan ahead of time - pick your battles carefully, distract when possible, be consistent and avoid emotion.

A new TipTap: By repeatedly ignoring them, children learn that there is nothing gained. Even young children can learn this lesson.This helps minimize them if you are consistant.

Well, you might : minimize them if you can keep your child well-fed, well-rested & on a reasonable schedule at all times. That's hard, especially if you have more than one child. The better a child can communicate, the less (s)he'll act out. You & your typically-developing 10-11 month-old can learn simple signs from "Signing Time" on PBS. Signing enhances language development, even in "neurotypical" tots.