Quizizz does not deliver knowledge and assessments individually, at this point, it is a lack of consideration of personal needs and motivation. Also, it is hard to use Quizizz to set up the same complexity tasks for students. Pedagogies can use e-learning techniques to decrease their working pressure, but for students, they are in different levels of learning, they are hard to follow teachers' progress and make themselves feel more stress when they get low results than others. Most of educational techniques can only impart intellectual knowledge content. In primary school, there is not many courses and knowledge that students need to learn, what's more, is self-control or help students to cultivate interests in those course. For emotional aspects, such as emotion management, creativity training, etc. , there are still examples of courses that need to be taught personally. And some courses such as art and crafts and sports are better to teach a person in person than those who rely on educational techniques.