季节变化的原因
Why seasons change
在一年中的不同时间进行观察，把日照长短和季节联系起来，发现夏天白天长、冬天白天短。
Make observations at different times of year to relate the amount of daylight to the time of year, noticing longer days in summer and shorter days in winter
学习证据 / Evidence
- 描述规律：夏天白昼时间长，冬天白昼时间短。
- 比较一年中不同时间的日出和日落时间。
- 把日照时长与天气和大自然的季节变化联系起来。
- Describe the pattern: more daylight hours in summer, fewer in winter
- Compare sunrise/sunset times at different points in the year
- Relate amount of daylight to seasonal changes in weather and nature
评估问题 / Assessment
{{name}}有没有注意到，夏天到睡觉时间天还亮着，而冬天天黑得早很多？能解释这个规律吗？
Has {{name}} noticed that it's still light at bedtime in summer but dark much earlier in winter, and can they explain this pattern?