Error correction models are like practice tests. They help you learn things by giving you feedback on how you did. They can tell you when you get things wrong or need more practice. They ask you questions, and then tell you the correct answer and why it is the correct answer. This helps you learn from your mistakes, so you can eventually get things right. When the error correction model is used for math, it might ask you questions about a certain math problem, and then give you the correct answer and why it is the correct answer. This helps you understand math concepts better and make fewer mistakes in math.