Today, I went to the composition class with my classmates happily as usual. Strangely, the teacher put salt, chopsticks, cups and water on the platform. The students were curious and looked at the platform with puzzled eyes.
Finally, it's time for class, and the teacher seems to know what we think. As soon as he came in, he went straight to the point: "Students, today Teacher An will let you open your eyes and see how my magician makes eggs swim." The students replied in unison: "impossible."
I saw the teacher carefully pour water into the cup and then put the eggs in the water. The students stared at the water glass. I saw the eggs falling unsteadily in the water, like a drunk, and soon I slept soundly at the bottom of the cup. The classroom immediately became lively, suspecting that the teacher could not do magic. Teacher An added salt to the water unhurriedly, only to see the teacher stirring it with chopsticks. Lazy eggs seem to float soon. When the teacher stopped stirring, the egg went up and down, but finally it sank, which disappointed the students. However, the teacher calmly continued to add salt, and the eggs rose a little. Suddenly, the eggs surfaced like several balloons, and even if the teacher pressed the eggs to the end, they could float quickly. Suddenly the students were surprised and happy.
At this time, Teacher An said, "The reason why eggs are allowed to swim is because the buoyancy of salt water is greater than that of clear water and the gravity of eggs." From this, we suddenly realized.
It turns out that students' writing can not only improve their writing level, but also learn other knowledge. How nice!
Comments: You carefully observed and recorded the whole process of egg "swimming" with humorous and vivid words. Well done!