求翻译：从60,70年代以后，课堂教学的研究开始比较活跃，而且成果丰富，研究活动不仅仅只专注于教师，开始关注学生的学习，关注师生之间和生生之间的交往与互动，关注教师的教学策略和学生的学习策略。研究的注意力扩展到了整个课堂教学活动。是什么意思？

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From 60,70 ages, the classroom instruction research starts quite actively, moreover the achievement is rich, not only research only concentrates the teacher, starts to pay attention to student's study between, pays attention to between the teachers and students and propagates the contact and the int

From 60, 70 years later, classroom study began more active and fruitful, research activities are not solely focused on teacher and start to focus on student learning, focusing on communication and interaction between teachers and students and between students and teachers ' teaching strategies and l

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