四年级华文单元十二：伽利略的落体实验 by NG PIK YIN Moe https://padlet.com/g66171874/k4oypk9ozo6mauwg 看了视频后发表你的看法，并提出问题。 en-us 2021-06-14 00:48:07 UTC 2025-09-24 03:55:26 UTC hello@padlet.com https://padlet.net/icons/png/1f52d.png 直升机的发明 g66171874 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627130734 2021-06-27 16:52:43 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627130734 锯子的发明 g66171874 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627130834 2021-06-27 16:52:55 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627130834 👇🏻同学们对于其中一项发明（锯子/雨伞/直升机）发表你有什么看法，在这里留言写出你的看法。👇🏻 g66171874 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627134151 例子：❤️吴老师： 发明有锯齿的锯子，可锯断木头。
（*同学们也可以选择其他两项发明来说出你的看法。）]]> 2021-06-27 16:58:47 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627134151 👇🏻同学们可以在这里留言, 提出你的疑问。👇🏻 g66171874 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627135124 例子：❤️吴老师： 直升机的旋翼桨叶应该是多少片？
（*同学们也可以选择其他两项发明来提出你的疑问。）]]> 2021-06-27 17:00:48 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627135124 g66171874 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627352560 2021-06-28 00:01:42 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627352560 https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627380388 乐颐：直升机除了运输旅游救护和巡逻还有什么用处]]> 2021-06-28 00:22:18 UTC https://padlet.com/g66171874/k4oypk9ozo6mauwg/wish/1627380388