
Figure 1.
The theoretical model of the interactions between microphones uses and the factors related to the teachers, students, parents, and educational and technical interventions represented by knowledge, class size, participation in classroom lessons, acoustics, loudspeakers, number of pupil-microphones, and errors with the microphones.
Table 1.
The distribution of teachers' gender, age, and school (%, N = 167).
Table 2.
Use of assistive listening devices (%, N = 167).
Table 3.
The distribution of the pupils' HL (%, N = 167).

Figure 2.
The modified structural equation model of the relationship between the use of teacher-microphones and the factors related to the teachers, pupils, parents, and technical and educational interventions.

