Table 5.

The division of spatial factors of active learning classrooms after re-clustering.

Factor	Question item	1	2	3	4
Spatial perception ALC_F1	The flexibility of use of tables and chairs	0.746
	Comfortable use of tables and chairs	0.737
	Space comfort in the classroom	0.728
	Usable area of tables and chairs	0.722
	Spatial flexibility in the classroom	0.696
	Spatial diversity in the classroom	0.658
	Equality of space layout in the classroom	0.572
Physical environment ALC_F2	Ventilation in the classroom		0.780
	Natural lighting in the classroom		0.774
	Artificial lighting in the classroom		0.767
	Temperature and humidity in the classroom		0.732
	Classroom decoration style		0.718
	The color scheme in the classroom		0.709
	Sound insulation in the classroom		0.560
Teaching interaction ALC_F3	Movable writing whiteboard in the classroom			0.776
	Interactive software experience in the classroom			0.727
	The use of multi-screen monitors in the classroom			0.701
	Clarity of electronic displays in the classroom			0.571
Learning support ALC_F4	Power outlets in the classroom				0.774
	Storage space in the classroom				0.757

Extraction method: principal component analysis; Rotation method: Kaiser normalized maximum variance method; the rotation has converged after 8 iterations.