निम्नलिखित में से कौन सा शैक्षिक ढांचा मुख्य रूप से बच्चों को अपने ज्ञान की संरचना को सक्रिय रूप से बनाने देकर उन्हें सशक्त बनाता है?

Before entering the classroom, a teacher asks himself, 'What changes in the behaviour of the students can I bring about through this lesson?' Such intended changes constitute the teacher's:

A class V teacher gave students a task to write a story. While students are writing, the teacher walks around the class helping those who make errors or ask for new words. Here, the teacher is playing the role of a: