by Olivia Wang

by Olivia Wang

The science class is a course that must be followed step by step. Many people feel bored because of cumbersome and difficult scientific knowledge. Many scientific experiments must have specific materials and equipment, and it feel like there is no opportunity to use them in our daily lives. so people will not be interested. In today's essay, I will share a simple experiment that is a little more interesting than the other ones. I will talk about experimental practices, our experimental results and recommendations, and science classes are not just about teaching science.

First, the lesson I want to share is “Charge cellphone with fruits”. The reason I chose to share this lesson was because my phone ran out of power on that day, so I really wanted to make this experiment successful. Then I could charge my cellphone, so this class whould be my most impressive science class in this semester. The materials we needed were fruits, salt water, metal, and wires. After preparing the materials, we needed to test the voltage generated by each fruit itself. We did this by using a special machine, the machine have a head to connected to the wires and we touch this head to the metal which was inside the fruits, then the machine will show the number of fruit's voltage. Next, we started to use wires to connect the metal which were inside the fruits. This process must ensure that the wires are in good contact and that the fruits are evenly covered with salt water. Then you can connect the phone and test whether the battery is enough to charge the phone.

After our experiment, the result is not as expected. even though we have combined all the different fruits. there is no way to reach the power required to charge the phone. We think there are several possible factors that caused the experiment to fail. First, different brands and models of cellphones require different power levels. Second, our fruits may not have reached a certain amount, and we did not arrange them neatly at the beginning, so it may lead to poor contact and poor power supply. Thirdly, the concentration of salt water is also one of the key points. Salt water that is too weak will not help the fruit to energize, and too thick will have the same result. If you want to make this experiment go more smoothly, I suggest that when placing the fruits at the beginning, the fruits should be placed neatly to avoid irregular power supply and poor contact. Then, at regular intervals, it is necessary to confirm whether each piece of fruit is evenly stained with salt water, or whether the salt water has been dried out. so as to prevent the experiment from failing all the time. In the end, it turns out that it was only because the salt water dried out.

After the above description, I believe that everyone has a general understanding of this scientific experiment. Next, I want to talk about what I have learned about things other than science in science class. As mentioned earlier, science is a course that must be completed step by step. A little error will affect the results of the experiment. So I think what I learned in the science class this semester is actually to face things with a rigorous and focused attitude. This skill can not only be used in science, it also can help you in every field. It will train you to pay attention to details and focus on the work in front of you, reducing your chances of making mistakes. This is one of the biggest thing I learn from the science class in this semester.

To sum up the above points, Experimental Practices, Our Experimental Results and Recommendations, Science Classes are not just teaching science. I hope everyone can use some scientific method in their lives. This is not just for fun, at the same time, when you are facing different things, you can take the rigor and focus of doing experiments to help you work. so that you can reduce the occurrence of mistakes.

by Olivia Wang

科學課是一堂的必須按步就班的課程。很多人因為繁瑣的科學知識和而感到無聊，再加上許多科學實驗必須有特定的材料和器材，平日裡於我們的生活也沒有什麼機會運用，從而不感興趣。今天這篇文章中，我將會分享一個對生活有幫助，且簡單的小實驗給大家。我會提到「實驗的做法」、「我們的實驗結果和建議」、「科學課其實不只是在教科學」。

首先呢，我選擇要分享的課程是「用水果給手機充電」，我選擇分享這堂課的原因是因為剛好當天我的手機沒電了，所以我格外的想讓這項實驗成功，這樣我才可以為我的手機充電，因此這堂課應該是我這學期最印象深刻的科學課。首先我們需要的材料有水果、鹽水和電線。材料準備完之後我們首先要測試每個水果本身所產生的電壓。接下來我們開始運用電線將水果們連接起來，這個過程要確保電線的接觸良好、水果上都有均勻的淋上鹽水。再來就可以連接手機，並測試電量是否足夠為手機充電。

經過我們的實驗，結果並不如預期，儘管我們已經將不同的水果全部結合起來也沒辦法達到充手機所需要的電量。我們認為造成實驗失敗的可能因素有幾個。第一，手機的牌子、型號不同，所需的電量應該也會有所差異。第二，我們的水果可能還沒有達到一定的數量、並且我們在一開始並沒有將其擺放整齊，所以可能導致接觸不良、通電不順暢。第三，鹽水的濃度也是關鍵之一，太淡的鹽水無法幫助水果通電，同時太濃也是一樣的結果。想要讓這項實驗進行的更順利的話，我建議在一開始擺放水果時，就應該先將水果擺放整齊，避免通電不順和接觸不良的情況發生。再來，每隔一段時間就要確認每塊水果是否都有均勻的沾到鹽水，或是鹽水是否已經乾掉，避免實驗一直失敗，結果最後才發現原來只是因為鹽水乾掉的情況發生。

經過以上的敘述，相信大家對於這項科學實驗已經有了大概的了解了，接下來我希望談一下關於科學課，我所學到的關於科學以外的事。前面提到科學是一門必須按部就班完成的課程，一點點的誤差都會影響到實驗的結果，所以我覺得這學期的科學課真正讓我學到的，其實是用嚴謹且專注的態度去面對事情的能力，這項技能不僅僅能用於科學上，它在每個領域都能幫助到你，它會培養你時時注意細節，並專注在眼前的工作上，減少你發生錯誤的機率。這是這學期我覺得科學課帶給我最大的收穫之一。

綜合以上這幾點，「實驗的做法」、「我們的實驗結果和建議」、「科學課其實不只是在教科學」，希望大家在生活中也可以運用一些科學小知識，這樣不只是為生活增加趣味，同時在當你面對不同事情，都可以拿出做實驗的那份嚴謹和專注去幫助你的工作，讓你減少錯誤的發生。

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