निम्नलिखित में से कौन-सा शैक्षणिक अभ्यास शिक्षण-अधिगम प्रक्रिया में सकारात्मक योगदान नहीं देता है?

Which of the following is a desirable practice in teaching students in middle school?

To encourage conceptual learning among students, a teacher should avoid:

Which of the following is a constructive way of responding to student errors?