"click! Hey! " With the camera shutter pressed, our joy was forgotten.
"ha! Ha! It's your turn! " Students who do experiments in noisy teachers' homes can ignore Mr. Song's orders! Doing experiments at the teacher's house, the students were very excited when they first heard teacher Song announce it.
I saw Teacher Song take out a big container full of water, a small transparent glass cup, two basins and two chopsticks. Zhu was the first to comment: "This is not a drinking contest! This is not fair, this bucket of water is not enough for Li to drink alone! " After hearing this, everyone looked at Li with a smile.
Many suggestions were made, but they were all rejected. I'm even more surprised Is there something missing? I saw Teacher Song take out a stack of cardboard and say to us, "What about this?" "oh! I have done this experiment, and my brother taught me. " Li, who has been absent-minded, suddenly said a word, but everyone was not interested in listening to his following, and quickly urged Teacher Song to start quickly.
Teacher Song finally started the experiment. 1 1 With small eyes, he stared at Teacher Song and only saw him pouring water into a small glass cup. Please note that it is almost full. Then I picked up a chopstick and gently stirred it in the water. The impact between chopsticks and glass was unusually crisp, and the stirring suddenly stopped. "And after that?" Teacher Song asked us with a smile. Anxious Li picked up a piece of cardboard and handed it to the teacher. He said, "Cover it."
Sure enough, Mr. Song took the cardboard and gently moved it from the edge of the cup mouth to the edge of the cup, slowly moving it over until it completely covered the cup mouth. Mr. Song pressed the cardboard with his big hand, then slowly turned it over and asked us, "What if you take your hand away?"
Needless to say, water will certainly flow out! However, when Mr. Song took his hand away, we were shocked. The cardboard stuck firmly to the mouth of the cup, water didn't flow out, and the cardboard didn't fall off. Everyone, look at me, I look at you, wondering.
Teacher Song left the question to us and let us do the experiment ourselves, so that we could answer this question. The first player to play is He Sha. She did so well that we all applauded. It's my turn I meticulously completed the specified action, which was the most critical step, but just as I was about to let go.
My hands suddenly became stiff, causing the water to flow out a little. I'm very nervous. Even the boys over there stopped their work and stared at the cup in my hand. Zhu was the first to hiss, "It didn't work! Unsuccessful! " I'm more nervous.
Even the hand holding the cup trembled slightly, and the hand pressing the cardboard slowly moved away, leaving only one finger. The critical moment came, and I pulled my finger off the cardboard completely, and the miracle happened again! I made it! Zhu's plot didn't succeed, so he had to leave angrily.