1. The students want to improve their English. In all of my interviews with students, they have said that they wanted their teacher to correct them (gently, nicely, in a friendly manner) when they made errors.
2. Correcting a student (in a caring, non-threatening manner) will not cause them damage...no student will try to jump out the window. In fact, the students might jump out the window if they don't feel they are making progress in improving their language skills.
3. The teacher should be careful--correcting students can be overdone--"There's a time and a place for correcting."
4. No matter what Dr. Krashen says, if the teacher doesn't provide the students with good clear models, if the teacher doesn't correct/reflect in a way that the students can hear the difference between what they have said incorrectly and the correction/reflection, and if the teacher doesn't give the students an opportunity to practice, the teacher is doing the students a disservice.
After a student has made an error while answering a question or summarizing, the teacher reflects (in correct language) what the student has said. This will allow other students who first heard the student say it (incorrectly) to hear it again but focus on the corrected version. It will also help the original speaker correct and compare what she/he said with the teacher's model.
Teacher: Kyung Ah, please summarize what we have just said about schema theory. You can use the words I have written on the board.
Kyung Ah: I now summarize what is writing on the board. The first, I define rima theory. Rima theory is you study the knowledge.
Teacher: Good, Kyung Ah, you got your idea across. Now let me give it a try," I'm now//going to summarize//what we have written on the board.//First,//I'll define the schema theory.//Schema theory//is the study of knowledge//." (Note: over emphasis and chunking) Kyung Ah, do you want to try it again? Does anyone else want to try it?
The teacher directly points out the error either orally or by writing it on the board (after the student has finished the utterance.)