The document discusses Mathematics club, exhibitions, and field trips as ways to engage students in mathematics outside the classroom. Mathematics club provides a setting for students interested in math to develop their skills through games and activities led by teachers. Exhibitions allow students to display their talents and learn from experts. Field trips reinforce classroom concepts by connecting math to real-world situations like sports statistics, factory production, and calculating sizes of parks and buildings. The document emphasizes that these activities stimulate curiosity, encourage creative thinking, and make learning fun.