Text this: Teacher’s classroom interaction strategies in a class in a secondary school in Hanoi: A case study

 __   _     ______  __    __   __   __   ______   
| || | ||  /_   _// \ \\ / //  \ \\/ // |      \\ 
| '--' ||   -| ||-   \ \/ //    \ ` //  |  --  // 
| .--. ||   _| ||_    \  //      | ||   |  --  \\ 
|_|| |_||  /_____//    \//       |_||   |______// 
`-`  `-`   `-----`      `        `-`'   `------`