General relativity (GR) represents the most recent theory of gravity, on which all modern astrophysics is based, including some of the most astonishing results of physics research. Nevertheless, its study is limited to university courses, while being ignored at high-school level. To introduce GR in high school, one of the approaches that can be used is the so-called rubber sheet analogy (RSA), i.e. comparing space-time to a rubber sheet that deforms under a weight. In this paper, we analyse the efficacy of an activity for high-school students held at the Department of Mathematics and Physics of Roma Tre University that adopts the RSA to address several topics related to gravity. We present the results of the questionnaires we administered to over 150 Italian high-school students to investigate their understanding of the topics treated.

广义相对论（GR）代表了最新的引力论，所有现代天体物理学都以此为基础，其中包括一些最令人惊讶的物理学研究成果。尽管如此，它的研究仅限于大学课程，而在高中阶段却被忽略。为了在高中引入GR，可以使用的一种方法是所谓的橡胶板类比（RSA），即将时空与在重力作用下变形的橡胶板进行比较。在本文中，我们分析了在罗马特雷大学数学和物理系举办的一项针对高中生的活动的有效性，该活动采用RSA来解决与重力有关的几个主题。我们向150多名意大利高中学生提供了调查问卷的结果，以调查他们对所治疗主题的理解。