“观察蚯蚓”是人教版八年级上册第五单元第一章“线形动物和环节动物”一节中重要的学生实验活动,其中包括使用放大镜观察蚯蚓的刚毛。然而,在教学实践中,很少有教师和学生能清晰地观察到蚯蚓的刚毛,笔者也一直在思索如何才能用简单的装置观察到蚯蚓的刚毛。笔者在浏览网页时看到一个“DIY微距手机当单反相机”的图片,笔者于是就思考这个微距手机能不能观察到蚯蚓的刚毛。通过探索,笔者发现该装置能有效观察到蚯蚓的刚毛及其他 “Earthworm observation” is an important student experiment activity in the first chapter of the fifth unit of the eighth edition of the PEP Edition, “Linear animals and link animals”, including the use of a magnifying glass to observe the earthworm bristles. However, in teaching practice, very few teachers and students can clearly observe the earthworm bristles, and I have been thinking about how to use a simple device to observe the earthworm bristles. When I read the website to see a “DIY macro mobile phone when the SLR camera ” picture, I would then think about this macro mobile phone can observe the earthworm bristles. Through exploration, I found that the device can effectively observe the earthworm bristles and other