读了《物理通报》(1996.1)第26页《关于浮沉条件的探讨》一文,有些不同想法,现写出来供大家讨论参考。1 判断物体浮沉不可能抛开密度 (1)小学自然课中已初步归纳了物体的浮沉条件(见小学自然第三册第54页,相应的教学参考书第134页,另有课本第48页关于比较物体轻重的叙述,课本是1993年版本)。小学自然课本中把浮沉(对水)归类为“比水重的物体下沉,比水轻的物体上浮”这实质指的就是 After reading the article “Study on Floating Sludging Conditions” on page 26 of the “Physics Bulletin” (1996.1), some different ideas were written for discussion. 1 It is impossible to determine the density of floating objects. (1) The floating conditions of objects have been initially summarized in the natural lesson of primary schools (see Elementary School Naturals, vol. 3, page 54, corresponding teaching reference book, p. 134, and textbooks, page 48). With regard to the narrative of comparing objects, the textbook was the 1993 version). In elementary school textbooks, floating weight (water) is classified as “a sink that is heavier than water, and an object that is lighter than water floats.” This essentially refers to