Avoiding tantrums doesn't only mean interacting with your kids when you are out of home. Get into the habit of constantly talking to your kids and explaining things. If they do something that needs disciplining, then do so, but explain to them WHY you are doing it.
As a result, they will in turn communicate with you when they are feeling bored, tired or hungry without resorting to screaming their little heads off.
All in all, this means less disciplinary action required from you, and as they grow they will open up to you more freely about things that are going on in their lives. You will probably appreciate this open communication the most when they are teenagers!