Recommended size of all-in-one machine for teaching

The size of the teaching touch all-in-one machine must consider the size of the classroom and the number of students:

70 inches, suitable for classrooms below 50 square meters, and the number of people is generally less than 30;

75/80 inches, suitable for a classroom size of 50-70 square meters, and the number of people is generally less than 50;

84/86 inches, adapt to the size of the classroom more than 70 square meters, the number of people is generally less than 80.