Grade 4 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 in math, and begin to explore different genres of literature in reading. In Grade 4, students also develop their writing skills by composing longer paragraphs and stories. They may participate in group projects and presentations, which help enhance their teamwork and communication abilities. Overall, Grade 4 is a crucial year for academic and social development.