An interjection is a word or phrase that we use to express our feelings or emotions. It's like a little word that we say in the middle of a sentence to show how we are feeling or to grab someone's attention. For example, "Wow, that's amazing!" or "Oh no, I forgot my lunch!" Interjections can be happy, sad, surprised, angry or any other emotion that we might feel. They are like little bursts of energy that we use to show what is happening in our heads and hearts. Next time you feel something really strongly, try using an interjection to express it!