关键词: 弹性混合教学, 教学模式, 教学改革, 线上线下教学, 教学效果, 环境科学概论

Abstract: With the deepening development of the digital age, the traditional single classroom teaching mode is no longer able to meet the diverse learning needs of students. introduction to environmental science is a leading and core course for environmental engineering majors, aimed at helping students establish a foundation of environmental knowledge, cultivate critical thinking skills, and develop the ability to solve complex environmental problems. In order to meet the needs of the reform of teaching modes in universities under the new situation, this article takes introduction to environmental science course as an example to analyze the main problems in current teaching, explore the flexible and adaptable blended teaching mode, and evaluate the teaching implementation effect from the perspective of students, in order to provide reference for the innovation of teaching modes and the improvement of teaching quality in universities.

Key words: Flexible blended learning, Teaching mode, Reform in teaching, Online and offline teaching, Teaching effectiveness, Introduction to environmental science