About pair work and group work.

When I was junior high school and high school student, I often play pair work and group work in English class. I think about group work below.
Plus point of pair work and group work.
・We can exchange our opinion each other.
・Compare each opinion and get other thinking in the class.
・We can talk more using English.
・We act with our friends, so we enjoy speaking English.

Minus point of pair work and group work.
・Using many times.
・Stusents who can speak English well talk their opinion more, but students who can't speak English well don't talk their opinion more.
・Teacher can't understand all student's work at a stretch.
・Shy students can't speak their opinion.(Especially, Japanese students?)

I think that pair work and group work have good point and bad point. But when I teach my English class, I will take in pair work and group work actively because these work are good opportunity to speak English!