Unit 1:物质的结构与性质 · Pre-AP 化学
加热曲线最大的迷惑是「平台段」:火焰一直没变,温度为什么停住不涨?先让学生点「加热」亲眼看平台出现,再讲清「吸热」与「升温」是两件事——能量去哪了,成了学生自己提出的问题。 The biggest puzzle on a heating curve is the plateau: the flame never changed, so why does the temperature stall? Students press 'heat' and watch the plateau appear before hearing the words — 'absorbing energy' and 'getting hotter' become two different ideas they discovered themselves.
上面是应用里真实运行的课件组件,不是录屏截图——每个学期每一节课都这样开场。想翻整套课件: This is the real lecture component running in the app, not a screenshot — every lesson of the term opens this way. Browse the full deck: 进入完整应用 →