If you have a PhD in Mathematics without training in education, you are not a teacher; you are just a mathematician. It is when you have taken a teaching qualification and passed that you become a teacher
How does an unqualified teacher harm the teaching profession?
If a person pretends to be a doctor while he is not, he will administer the wrong drugs on patients. And the patients may die. The same applies to a person claiming to be a teacher- he maims the students intellectually. A quack teacher can destroy a generation of children by teaching them wrong things. At a young age the child is very impressionable, they copy easily. So whatever you teach them they absorb. That is why the society frowns at children being exposed to phonographic pictures or videos. If a wrong person who does not have the knowledge comes to teach the children, he is destroying the society.
But a good number of graduates teaching in schools nowadays have not acquired certificates in education.
If you are a teacher, two things are involved: knowledge of the subject matter and the method of instruction. Effective teaching must resort in effective learning
What is the link between class size and student achievement? Do you have a standard student-teacher ratio?
The class size actually determines quality learning; thus, if the class size is large, teaching and learning may not be effective. This is because of individual differences, which can be addressed if the class size is small. The teacher may have the attention of every student.
It has been established that in primary and secondary schools, as well as the universities, class size or student-teacher ratio should be respected. At the primary and secondary schools, effort is being made at getting the exact ratio, but it is difficult to establish that at the university. I remember that when I was an undergraduate we had to stay outside to listen to the lecturer on microphone in our Chemistry class. We didn’t know who the lecturer was because we couldn’t get seats. In that situation, the class should have been split even if it was only one teacher that would attend to the students.
This explains why the National Universities Commission (NUC) came with ‘carrying capacity’ of every institution. This means that you must take students according to your facilities and manpower. The NUC goes for inspections to enforce that.
It is true that if the students outnumber the facilities, they will not learn well. In the primary school, the number of pupils per class should be between 25 and 30 while secondary school teachers can manage between 30 and 40 students in a classroom. At the