翻转课堂在免疫学教学中的探索与实践

近年来翻转课堂作为以学生为主体、教师为主导的教学方式逐渐被应用于大学本科教学。本文介绍了翻转课堂在"免疫学"教学中的探索与实践,包括课程内容设计、知识点提取、课前自主学习资源的制作与发布、高效课堂教学活动设计与实施、评价方式及教学反思等六方面内容。翻转课堂的教学模式实现了教学由"单向传授"向"双向互动"、"被动学习"向"自主探索"的转变,学生不仅掌握了免疫学的基础知识,而且自主学习能力得以提升。     

基于“玩课网”对“免疫学”翻转课堂课前教学进行评价的实践

翻转课堂是近年来兴起的一种以学生为主体的教学模式。此前我们以QQ群为平台对"免疫学"教学进行翻转课堂实践,取得了良好效果。但受QQ平台技术的限制,难以对学生的自主学习情况进行有效监督与考核。因此,在原有基础上,以"玩课网"为平台,设计了以学生完成课前自学任务获得积分作为翻转课堂的课前教学评价。实践证明不仅促进了学生高质量完成课前自学任务,也使任课教师及时了解学生对课前自主学习内容的掌握情况,使课堂教学更具有针对性,提高了翻转课堂的教学效果。     

翻转课堂在细胞生物学教学中的应用

翻转课堂是近年来备受关注的一种能有效调动学生学习积极性的教学模式。在课前,教师通过发布学习微视频和与之匹配的自学任务单完成知识的传递,学生通过观看微视频和完成任务单上的自测题实现知识的获取。在课堂,教师通过设计一系列学习任务,让学生通过小组合作的方式解决问题,从而实现对知识的内化。以培养大学生自主学习能力为目标,对基于翻转课堂模式的细胞生物学教学进行了连续3年的探索和改进,不断提高学生对翻转课堂在细胞生物学教学的满意度,增加了学生的学习兴趣,增强了学生团队合作与解决问题的能力。研究结果表明,翻转课堂教学模式不仅能提高学生的期末成绩,还增加了优秀率和及格率。     

课堂之外——微生物学“翻转课堂”的改革实践

介绍了华中农业大学在微生物学教学过程中进行"翻转课堂"的教学改革实践,从课堂教学、课后作业、课程论文、主题讨论、在线答疑等方面积极引导学生在生活中自主学习微生物学相关知识,将"翻转课堂"与传统课堂相结合,实现了教学由"课程传授"向"知识内化"转变,学生不仅掌握了微生物学相关知识,而且能够自主串联、主动学习,真正实现了课堂翻转。     

基于翻转课堂的动物细胞原代培养实验教学设计及应用

翻转课堂是指学生在课前通过自主学习完成知识的获取,在课堂则通过师生互动和小组讨论完成知识内化的一种教学模式。该模式由于能有效调动学生学习兴趣和积极性而受到广泛关注。该教研室以"动物细胞原代培养"实验为研究对象,以激发学生学习动力和培养创新能力为目的,对翻转课堂教学模式设计进行了连续三年的探索和改进,提高了学生的科学素养。     

基于翻转课堂的环境生物学实验PBL教学设计与实践

基于翻转课堂理论,结合以问题为基础的学习(Problem-based learning,PBL)教学法的"问题设置"、"问题解决"等特点与优势,构建了适用于实验操作类课程的教学模式,并以"水体疑遭粪便污染"这一实际问题作为情景进行的综合设计性实验为例,对高等教育环境相关本科专业基础课程"环境生物学实验"进行了创新性教学设计和实践。该教学模式通过课前准备、课中实施和课后反馈3个过程对实际问题进行分析和解决。课前准备包括教学团队针对实际问题设置若干相关实验场景,制作和搜集相应教学视频等教学资源,安排学生学习和完成任务;课中实施时教师直接指导学生进行实验操作,强调观察和记录实验现象,提出问题引导学生思考;课后反馈为学生提交实验结果与讨论、完成巩固练习和反馈问题等。实践表明,该教学模式在一线教学中行之有效,能取得较好的教学效果,值得推广。     

情景模拟在“医学微生物学”翻转课堂教学中的应用

翻转课堂是实现以学生为中心、提升学生自主学习能力的重要教学方法。随着线上课程的开展和学习平台技术的成熟,学生已能在课前获得足够的资源。然而,习惯于灌输式教育的学生仍缺乏自主学习的动力和方法。为此,我们教研团队尝试采用情景模拟的课堂活动设计来突破翻转环节实施的难点。研究发现,参考临床案例撰写剧本的过程能有效提升学生的自学兴趣和能力。学生课前在线预习时长和章节访问次数,以及参考资料阅读率和小组讨论时长均显著增加。课堂上,学生将课前所学知识在模拟实践中进行练习,促进了师生互动,帮助学生加深对知识的理解,提升学习成绩和满意度,同时也培养了学生的团队合作精神,建立临床思维,提升职业兴趣和能力。因此,情景模拟的融入实现了翻转课堂教学中“课前学”和“课上习”的教学闭环,为进一步推进翻转课堂的开展提供参考。     

翻转课堂在高职微生物检验教学中的应用探讨

翻转课堂是一种颠覆传统的充满活力的全新教学模式,它包含了课前知识获取和课堂知识内化两部分。借力翻转课堂,充分利用信息技术,能真正实现授课时间的重新分配。本文旨在探讨如何有效的将翻转课堂理念引入高职医学微生物检验课程的教学中,发挥其优势,建立翻转课堂教学模型,探究其实施策略,以微生物检验中的重点内容——革兰染色法的教学为实例,融合多种教学方法,以期在信息化环境下,充分实现以学生为主体,教师为主导,强调问题中心、任务驱动、以学为主的教学模式深化改革,真正提高教学成效。     

基于微课的翻转课堂实践在“食品微生物学实验”教学中的应用

微课是一种为在线学习而生的,以学习者为中心设计的可视化学习资源。微课的应用往往离不开翻转课堂。为了解决"食品微生物学实验"课程中存在的"教"与"学"的问题,本文构建了基于微课视频的翻转课堂实验教学模式,总结出了"一视、二台、三看、四仿、五评"的实验课教学策略。该教学模式实现了"以教为主"向"以学为主"的转变,以及"知识传授为主"向"能力培养为主"的转变,提高了学生的自主学习能力和学习兴趣,对提高教学效果具有明显的促进作用。     

浅谈如何提高高三生物复习课的课堂效率

本文通过具体设计一次课题活动,包括课题活动提出的背景;要达到的目标;活动实施的具体过程;以及最终学生的收获和指导教师的认识和体会。简析了如何使高三学生能系统掌握所复习的知识,提高了复习课的课堂效率,并学会对基础知识做出进一步延伸,运用所学知识解决实际问题,这样在高考中显出了较大的优越性。     

The early development of the tail and the transformation of the shape of the nucleus of the spermatid of the domestic fowl,Gallus gallus

Summary The differentiation of the spermatid, especially in reference to the formation of the flagellum, and transformation of the shape of the nucleus was investigated in the domestic fowl.In the early stage of the spermatid, a prominent Golgi apparatus appears around the centrioles. The Golgi vesicles then surround the axial-filament complex which develops from the distal centriole. These vesicles fuse to form continuous membrane at the earliest stage of flagellar formation, and in the succeeding stage Golgi lamellae are attached to the plasma membrane of the developing flagellum. From these observations, it is assumed that Golgi apparatus may be a source of the membrane system of the flagellum.The microtubules distributed around the nucleus form the circular manchette. The anterior region of the nucleus with the manchette is cylindrical in shape and the posterior region without it remains irregular in shape. When the circular manchette has been completed, the whole nucleus acquires a slender cylindrical shape. The circular manchette then changes into the longitudinal manchette. The nuclei of spermatids without a longitudinal manchette are abnormal in shape. In view of these observations it is assumed that the nuclear shaping of the spermatid may be accomplished by circular manchette and the maintenance of shape of the elongated nucleus by longitudinal manchette.The authors wish to thank Mr. Takayuki Mori for his helpful suggestions and technical advices     

Characteristics of the membranes of the pellicle of the ciliatePseudomicrothorax dubius

Summary The membranes of the pellicle of the ciliatePseudomicrothorax dubius are investigated using thin section electron microscopy and freeze-fracture replicas. The plasma membrane is covered by a surface coat and is connected to the outer alveolar membrane by short, sometimes branched, bridges. The inner alveolar membrane is coated on both sides. The epiplasm lies in intimate contact with the cytoplasmic surface of this membrane, and there is a corresponding deposit on the other surface. This deposit is regularly striated.The epiplasmic layer and the alveoli are interrupted at sites of cytotic activity,e.g., the attachment sites of trichocysts, the cytoproct, and the parasomal sacs. The striated deposit ends where the epiplasm ends, indicating a direct relationship between these two epimembranous layers.There is a deposit along the sides of the first part of the tip of the trichocysts, and in this region the trichocyst membrane is free of intramembranous particles.The membrane of the parasomal sacs has a coat on both surfaces. That on the extraplasmic surface is similar to the surface coat of the plasma membrane. The origin of the cytoplasmic coat is unknown. The cytotic activity of these sacs is indicated by their highly irregular profiles.     

Observations on the permeability of the choriocapillaris of the eye

Summary The choriocapillaris is a fenestrated capillary bed located posterior to the retinal pigment epithelium. It serves as the main source of supply to the photoreceptors, retinal pigment epithelium, and other cells of the outer retina. The permeability of these capillaries to intravenously injected ferritin (MW — approx. 480,000; mol. diam. 11 nm) was examined in the mouse, rabbit, and guinea pig, each of which is characterized by a different type of retinal vascularization. In all three species, the bulk of the ferritin remained in the capillary lumina, where it appeared to be blocked at the level of the diaphragmed fenestrae. Some ferritin was present in endothelial cell vacuoles. The results confirm previous work on the rat choriocapillaris and indicate that the barrier function of the choriocapillary endothelium is present even among species in which the retinal circulation differs significantly.Supported by NIH grant EY03418