Reflections on the teaching of floating eggs in salt water

The exercise content of this unit is to write "I did a little experiment". Last night, I arranged for students to do a small experiment at home and remembered it.

I brought two transparent cups and two raw eggs from home this morning, and there are salt and spoons in the office. I'm going to do a small experiment of "floating eggs in salt water" in the second Chinese class in the morning.

Interest is the best teacher, and in a pair of curious and expectant eyes, our experiential composition class has also begun.

In the first experiment, I put eggs in clear water and showed the students the changes of eggs in water. Let the students talk about the experimental process. From the observation, it is easy to make things simple and students can finish them easily.

In the second experiment, I added a small amount of salt to the second glass of water and kept stirring. When the salt melts, I put the eggs in the water. Although the egg didn't float this time, the change of the egg in the water was completely different from the first time. The experiment seems to have failed, and the children are somewhat disappointed. When the children were extremely depressed, I picked up the spoon in my hand and added a lot of salt to the water without hesitation. The water in the cup became turbid, and the eggs in the salt water slowly straightened up and floated. The children cheered and the whole classroom boiled.

With the previous accumulation, they wrote the changes of eggs in water very vividly. Some students said, "Eggs stagger to the surface like small bubbles." Some students: "eggs float to the surface like divers to breathe fresh air." Another student said, "Eggs float on the water like scouts to see if there is any danger outside." Yes, well said. With my constant praise, their imagination is becoming more and more magical and their sentences are becoming more and more wonderful.

? Sometimes we always say that students can't write compositions. I think as long as our teachers seize the opportunity, guide correctly and let students express themselves freely, you will find that students will bring us many accidents.

Of course, education is also flawed. In this class, I focus on teaching students how to write experiments, while ignoring the free play of good students in the class. If I can give them more room to play in class and share their aura, it may be more perfect. ...

Written in may, 20021year.