Fourth grade is typically the fourth year of elementary school in the United States, usually for students aged 9 to 10 years old. In this grade, children build on their foundational skills in subjects like math, reading, and science. They often learn more complex concepts, such as multiplication and division, as well as reading comprehension strategies. In addition to core subjects, fourth graders may also explore social studies, where they learn about their state or country, and participate in art and physical education classes. This year is important for developing critical thinking and teamwork skills, as students often work on group projects and presentations.