Trend TA6684 Argus large 13-3/8 x 9 poster combo pack, classroom basics, 6/pack "Classroom Basics" large poster combo pack for use in motivating students and reinforcing positive behavior. Create themed displays with the most popular large posters in value-priced combo packs. Display them together to motivate students, reinforce positive behavior and sustain interest in learning. Versatile and durable for years of use.