Table 4.

The division of spatial factors of lecture classrooms after re-clustering.

Factor	Question item	1	2	3
Space and Furniture Perception TC_F1	Usable area of tables and chairs	0.836
	The flexibility of use of tables and chairs	0.824
	Area per person in the classroom	0.806
	Comfortable use of tables and chairs	0.794
	Space flexibility in the classroom	0.718
	Storage space in the classroom	0.717
	Space comfort in the classroom	0.698
	Power outlets in the classroom	0.679
Physical and decorative environment TC_F2	Artificial lighting in the classroom		0.779
	Temperature and humidity in the classroom		0.770
	Ventilation in the classroom		0.756
	Natural lighting in the classroom		0.736
	Classroom decoration style		0.666
	The color scheme in the classroom		0.648
	Sound insulation in the classroom		0.550
Visual and pedagogical display TC_F3	Range of view of the blackboard in the classroom			0.782
	Clarity of the projector in the classroom			0.756

Extraction method: principal component analysis; Rotation method: Kaiser normalized maximum variance method; the rotation has converged after 6 iterations.