The purpose of this research is to investigate how university students in the faculty of education perceive mistakes made by elementary school students. In the research method, a researcher gave the following tests to university students in the faculty of education. 1) Predict elementary school students' mistakes. 2) Think about how to teach elementary school students' mistakes. The results revealed two things: 1) University students should learn to make realistic mistakes with elementary school students; 2) University students should learn how to teach according to the mindset of the child who made the mistake.
