Course grades based on exams / based on class participation. Which do you prefer and why?

When we study in university, a wide range of courses that we have to take require various type of systems to grade our scores. Some courses' grades are only based on exams while other grades are based on our performance of class participation. In my view, I like the courses in which I can participate more in class for two reasons.

First of all, it is no doubt that the reason why we take different classes in university is, without a doubt, to learn something new and to it is impossible to gain knowledge by not attending our classes every day. Class participation, needless to say, is the best way to keep students focused on their studying and class participation has a significant effect on students' attendance as well. If a course grade is solely determined by the scores on exams, a lot of students may not want to attend class every day because their attendance has nothing to do with their grades. To increase students' attendance rate, teachers should require their students to participate in diverse class activities such as a group presentation and or a discussion on a certain topic.

Also, it is more fun when student are able to take part in different school activities in class. For example, when I was in university, I was not really into history because I thought it was so boring and there were too many things to remember. However, my history teacher was an energetic and humorous person and he liked to give us a quiz before he started teaching. It was a lot of fun because the quiz was a competition between three groups and some extra credits were credit was {extra credit is always singular, a plural option would be "extra credit points"} added to the grade for the members of the group that won the quiz. By participating in a group quiz every day before the class started, naturally, my interest in history class was largely {largely sounds a little odd here, more natural options would be greatly/significantly} increased as well as my knowledge about Chinese history.

To sum it up, there are two advantages of on class participation: to raise students' attendance rates and to stimulate students' interest in a certain subject. For these reasons, I prefer to take a class where a course grade is based on class participation.