烹饪如教学,煎鱼要把握好"度",教学亦是如此。学科素养下历史课堂教学要把握好"多"与"少"的度,处理好"收"与"放"的度,"难"与"简"的度,"给"与"要"的度,"动"与"静"的度,"内"与"外"的度,"他"与"己"的度,"中"与"外"的度,"知识""能力"与"情感、价值观"的度,"知"与"行"的度。只有坚持适度原则,才能贯彻学科核心素养和学科知识学习有机结合起来,才能教得精彩纷呈,学生学得有滋有味。