Preast Vanessa, Danielson Jared, Bender Holly, Bousson Maury
Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA.
Vet Clin Pathol. 2007 Sep;36(3):245-52. doi: 10.1111/j.1939-165x.2007.tb00219.x.
Computer-aided instruction (CAI) was developed to teach veterinary students how to make blood smears. This instruction was intended to replace the traditional instructional method in order to promote efficient use of faculty resources while maintaining learning outcomes and student satisfaction.
The purpose of this study was to evaluate the effect of a computer-aided blood smear tutorial on 1) instructor's teaching time, 2) students' ability to make blood smears, and 3) students' ability to recognize smear quality.
Three laboratory sessions for senior veterinary students were taught using traditional methods (control group) and 4 sessions were taught using the CAI tutorial (experimental group). Students in the control group received a short demonstration and lecture by the instructor at the beginning of the laboratory and then practiced making blood smears. Students in the experimental group received their instruction through the self-paced, multimedia tutorial on a laptop computer and then practiced making blood smears. Data was collected from observation, interview, survey questionnaires, and smear evaluation by students and experts using a scoring rubric.
Students using the CAI made better smears and were better able to recognize smear quality. The average time the instructor spent in the room was not significantly different between groups, but the quality of the instructor time was improved with the experimental instruction.
The tutorial implementation effectively provided students and instructors with a teaching and learning experience superior to the traditional method of instruction. Using CAI is a viable method of teaching students to make blood smears.
开发计算机辅助教学（CAI）是为了教导兽医专业学生如何制作血涂片。该教学旨在取代传统教学方法，以便在保持学习成果和学生满意度的同时，提高教师资源的利用效率。
本研究的目的是评估计算机辅助血涂片教程对以下方面的影响：1）教师的教学时间；2）学生制作血涂片的能力；3）学生识别涂片质量的能力。
为高年级兽医专业学生安排了三个实验室课程，采用传统方法授课（对照组），另外四个课程采用CAI教程授课（实验组）。对照组的学生在实验室开始时由教师进行简短的示范和讲座，然后练习制作血涂片。实验组的学生通过笔记本电脑上的自定进度多媒体教程接受指导，然后练习制作血涂片。通过观察、访谈、调查问卷以及学生和专家使用评分标准对涂片进行评估来收集数据。
使用CAI的学生制作的涂片更好，并且更能识别涂片质量。两组教师在教室里花费的平均时间没有显著差异，但实验组的教学质量有所提高。
该教程的实施有效地为学生和教师提供了一种优于传统教学方法的教学体验。使用CAI是教授学生制作血涂片的一种可行方法。
