Will it Float or Sink?

是浮还是沉？ 

Have you ever wondered why some objects float while others sink? Our third graders shared this curiosity and were eager to explore like everyone else. Initially, students predicted that heavier objects would sink while lighter ones would float. To test this, they compared a grape and a watermelon. Most students assumed the heavier watermelon would sink and the lighter grape would float. To their surprise, the opposite happened - the watermelon floated while the grape sank!

你是否对物体浮沉的奥秘感到好奇，为什么有些物体在水中会浮起来，而有些却会沉下去？这份探索未知的渴望，同样在我们三年级学生的心中萌发，他们也急切地想要揭开这一自然现象的面纱。最初，学生们凭直觉去预测：重的物体会下沉，而轻的物体会漂浮。为了验证这一预测，我们课上进行了一场葡萄和西瓜的对比实验。实验开始前，大多数学生都认为较重的西瓜会下沉，而较轻的葡萄会漂浮在水面。然而，实验结果却让他们大吃一惊——西瓜竟然漂浮起来，反倒是重量较轻的葡萄沉了下去！

葡萄和西瓜，“谁主沉浮”？

Demystifying Air Pockets

解开气囊之谜

This unexpected result prompted further investigation. The students learned that certain fruits, such as cranberries and watermelons, contain ‘air pockets’ that allow them to float. Although these air pockets are invisible to the naked eye, the students grasped how they play an essential role in helping objects float. Their curiosity led them to make additional predictions about which fruits and vegetables would sink or float, testing their hypotheses by dropping various items into the water. Many of their predictions proved correct! Clearly, the students’ hands-on learning experience allowed them to understand scientific concepts effectively during this lesson. 

这一出乎意料的结果极大地激发了学生们进一步探究的热情。他们了解到，诸如蔓越莓和西瓜这类水果，其内部都含有能让自身漂浮的“气囊”。尽管这些气囊肉眼难以看到，但学生们通过实验可以理解这些气囊在帮助物体漂浮方面所起到的关键作用。在好奇心的驱使下，他们还对更多的水果和蔬菜的沉浮特性做出预测，并通过将它们放入水中来验证自己的猜想。令人欣喜的是，许多预测都得到了证实！显然，学生的实践学习经验使他们能够在这节课上深刻理解并掌握了科学概念。

浮还是沉？你猜对了吗？

Do Apples Sink While Oranges Float?

苹果会沉而橙子会浮吗？

Eager to continue their exploration, our third graders shifted their focus to apples and oranges. They were particularly interested in how different conditions and properties of objects would affect their buoyancy or ability to sink or float. They began by dropping the whole fruits into the water, then cutting them in half, and finally peeling them. They discovered that some fruits, like oranges, could sink when peeled. This led to a deeper understanding that the skin, rind, or peel traps air, which helps the fruit float when intact.

带着这股探索的热情，我们三年级的学生们将注意力转向了苹果和橙子。他们心中充满疑惑，想要一探究竟：不同物体所处的环境和自身的特性，究竟会如何影响其浮力，是下沉还是漂浮？首先，他们尝试将一颗完整的水果放入水中；接着，将水果一分为二；最后，削去或剥去果皮。在这一过程中，他们惊奇地发现，像橙子这样的水果，一旦剥去皮后，竟然会沉下去。这一发现让他们有了更深入的理解：水果的外皮、果壳或者果皮能够锁住空气，从而使完整的水果能够漂浮在水面上。

进一步探索浮沉之谜

“Berry” Delicious

莓”味可口

As their experiments centered around floating and sinking, our third graders became excited about the food they would prepare on cooking day. Students anticipated using a fruit that floats—cranberries! Known for their small size and air pockets, cranberries are perfect for floating in water. What better way to utilize them than by baking delicious cranberry muffins?

在围绕浮沉现象进行实验的过程中，三年级的学生们无比憧憬下次CSC实操课要做的美食。他们期待着使用一种能在水中漂浮的水果——蔓越莓！蔓越莓因体积小巧且内含气囊，便成了能够漂浮的水果的绝佳选择，还有什么是比用它们烤出美味的蔓越莓玛芬蛋糕更好的方法呢？

So, from science exploration, our students are now ready to shift into another exciting adventure inside the kitchen. Their excitement could no longer be stifled - they were eager to use the kitchen tools and learn the ingredients needed for baking. Working collaboratively, they sifted, mixed, and folded the batter to create the tastiest muffins possible. The thrill of baking these muffins was heightened by knowing they could take them home to share with their families as a special "thank you" treat. Our proud Little Einstein Chefs packed their muffins with care, eager to share their cooking creations with their family. 

因此，做完科学探索之后，学生们也做好准备开启另一次令人兴奋的厨房烹饪之旅。他们迫不及待地想要使用厨具，认识本次烘焙所需的食材，这种兴奋之情难以言表。在CSC实操过程中，学生们齐心协力，筛面粉、混合、搅拌面糊，只为做出最美味的玛芬蛋糕。当学生们得知可以把这些亲手烘焙的玛芬蛋糕作为一份特别的“感谢”礼物带回家与家人共享时，这份烘焙的乐趣更是被无限放大。看！那些头戴厨师帽、眼神闪烁着自信光芒的小小“科学家们”，正在精心包装着他们的玛芬蛋糕，迫不及待地想要与家人们一起品尝这份载满爱与创意的烹饪作品。

Until our next cooking day, we encourage everyone to enjoy sharing what you’ve made with your hands and heart!

在下次烹饪日之前，大家尽情享受那份用双手和真心创造并分享的乐趣吧！