Magic ice

First of all, know ice and feel its characteristics.

At the beginning of the implementation of the theme of "It's getting cold", children began to look forward to seeing different scenes from autumn because the temperature gradually dropped, so we began to look for winter again and again. In the process of looking for winter, we found a thin layer of ice in the kindergarten pond, and the children looked around the pond curiously for a long time. In the process of arranging outdoor activities and preparing equipment together, it was found that the residual rain in the tire was also frozen. Curious, the children hold small ice cubes in their hands and observe them carefully. The teacher guided the children to observe the color and smell of ice, and immediately a child told everyone that "ice is transparent and smells." No smell. "

Second, the conjecture and observation experiment of ice

But just as the child put the ice in the palm of his hand and observed it carefully, another child said, "Teacher, why is my ice getting smaller?" Another child said, "My ice is going to disappear." After the children asked such questions one after another, the teacher led the children to guess why the ice disappeared. "Mom said the ice would melt." "What will ice become when it melts?" The teacher continued to ask, "I don't know" and "it will become water". In the children's scribbled answers, the teacher decided to take the children to observe with a small experiment.

1. Will the ice melt

We picked up some large ice cubes from tires and small ponds, put them in a small transparent box and put them on the steps, and then continued our outdoor activities. In outdoor activities, children come to observe the changes of ice from time to time. After a while, a child exclaimed, "teacher, a small piece of ice is going to disappear."

"Has the other piece of ice in that box changed?" The teacher kept asking,

Young: "It seems to be getting smaller."

Yang: "There is still water in the box. We didn't put water into the box when we put ice cubes just now. "

Teacher: "Where did the water come from?"

Yang: "I told you, it was made after the ice melted."

It turns out that ice will melt and turn into water after melting!

Teacher: "Hey, why does the ice melt?"

Teenager: "Because the sun came out." "Because it's getting hot."

2. Will water change back to ice?

In order to arouse children's interest in further understanding ice and water, the teacher throws a small question to make children think: will ice melt into water because it is too hot, and will water turn back into ice? Maybe. I don't know. Let's have a try and see if water will turn back into ice and when it will turn into ice.

So we used boxes to melt ice into water and put it on the steps to continue observation. In order to facilitate children's observation, the teacher put a small rope in the water (later added a small bottle cap) to observe that the water had not turned back to ice during outdoor activities in the afternoon. We will wait for the surprise tomorrow morning! In fact, our little experiment lasted for a long time, because the temperature in Qingdao was not particularly low for a while. At MINUS 1 degree, the ice formed is almost invisible. Finally, in the cold day of MINUS 4 degrees, we waited for a surprise.

It turns out that it doesn't necessarily freeze when it is cold, but it needs to be very cold to freeze. The teacher said that the temperature should be below zero to freeze ~

Third, our little experiment of freezing ice flowers.

Children know that when the weather is particularly cold, water will turn into ice, so we decided to carry out a small experiment of freezing ice with children and feel the interesting winter and magical ice with them! In the process of selecting materials, preparing materials and hands-on operation, let children participate in it and experience the fun of doing experiments.

Write at the end:

The whole process of understanding and exploring ice is long, which has lasted for almost three weeks so far, but the interest of children has only increased. On the one hand, I think it is to respect and protect children's curiosity, and give children time and opportunity to make bold guesses when they find problems and have interest. Second, teachers' timely guidance can throw out new problems and trigger children to continue thinking and exploring; Third, in the process of understanding ice, children's participation and operation are extremely important. During the long experiment, the teacher constantly reminded the children to observe their own experimental results at any time. Based on the above analysis and participation experience in the process, as a teacher, I can feel the children's gains in the process of inquiry, including keen observation of common things in life, simple understanding of the characteristics of ice, stimulation of interest in scientific inquiry, and the unique experience of actively participating in and operating experiments. Of course, I have gained as much as the children, and what moves me even more is that children can persist in learning what they are interested in for such a long time at an early age. Children with unlimited potential are great ~