中文摘要：

目的在卫生毒理学理论课和实验课教学中应用以问题为基础的学习（problem-based learning,PBL）方式,评价PBL教学方式的实施效果,探讨卫生毒理学PBL教学方式是否有利于提高预防医学专业学生的多方面能力。方法中国医科大学预防医学专业2个班级随机确定为PBL方式组和传统方式组。通过课程考试和调查问卷研究PBL方式的应用效果及对学生多方面能力培养的影响。结果 PBL方式组课程考试分数、优秀率以及对教学方式的满意率均显著高于传统方式组。PBL方式组对＂拓宽视野、强化知识记忆、增加学习兴趣、提升自主学习能力、提升独立思索能力、提升语意表述能力、提升创新能力、提升综合研究能力、提升处理问题能力、提升协作交流能力＂方面的认可率也显著高于传统方式组。结论 PBL教学方式能有效提高卫生毒理学教学质量和效果,有利于预防医学专业学生拓宽知识面、强化知识记忆、增加学习兴趣,促进预防医学专业学生多方面能力的培养。

英文摘要：

Objective To explore the model of problem-based learning （PBL） applied in teaching theoretical and experimental courses in hygienic toxicology and its effects in teaching. Besides, the effects of PBL model on the development of undergraduate＇ s other abilities in preventive medicine were evaluated. Methods Sixty undergrad- uates majoring in preventive medicine from two classes in China Medical University were selected as subjects in the study. The two classes were randomly divided into PBL and traditional teaching groups respectively. The PBL effect and influence of PBL on the development of undergraduate＇ s other abilities were investigated by the means of course examination and questionnaire. Results The average score, excellent ratio of course examination and ratio of satisfaction to teaching model in PBL teaching group were significantly higher than those in traditional teaching group. The rates of approval about ＂broadening of horizon, deepening of knowledge memory, increase of learning interest, improvement of self learning and thinking ability, enhancement of expression ability, im- provement of innovation ability, enhancement of ability in analysis and treatment of problem and increase of ability in cooperation and communication ＂ in PBL teaehing group were significantly higher than that in tradition- al teaching group. Conclusion The model of PBL could improve quality and result of teaching in hygienic toxicology effectively, help to broaden knowledge, deepen memory of knowledge, increase interest of learning, and thus promote the development of undergraduate＇ s other abilities in preventive medicine.