Technologies, Learning And Cognitive Models
Table 1:
| Understanding Level of PH | |
| Scale | Students at secondary schools |
| 0 Not understood | 1 |
| 1 Only the general structure happens | 5 |
| 2 The structure and the relationship between acid and basic are understood | 30 |
| 3 Understand in its theoretical aspects but not completely the practical consequences | 75 |
| 4 Understood in its theoretical and practical aspects | 71 |
| Total | 182 |