When a child is having a tantrum, validate their feelings, like "I know it's upsetting we're not getting that toy right now." Allow them to feel what they're feeling, but then move on. Don't get into a back and forth with a toddler because you're not going to win. It's okay to let them scream it out for 10 minutes. They're humans too, and they don't have the tools we have to deal with their emotions.