With a burst of hurried footsteps, Mr. Yan came into the classroom with a smile and said happily to everyone, "Today we have an activity class with symmetrical figures." Please look at the picture. Then think about what happened in the picture. "Then, the teacher showed us all the computer animation pictures. After reading it, I raised my right hand and the teacher called me. Facing many teachers at the back of the classroom, I said calmly, "This is a dialogue between butterflies and leaves. The butterfly says it is a family with the leaves. " "agree!" The students shouted. The teacher went on to say, "Yes. Butterflies and trees are members of symmetrical graphs. Students can also fold the' butterflies' and' leaves' in their hands and see if they find anything. "
Suddenly, there was silence in the classroom. After a while, Jia Weiwei broke the silence: "There is a trace between the folded butterfly and the leaf." The teacher said, "Yes! We call it the axis of symmetry in mathematics. " After that, let's look at four pictures of buildings. The students found that they were all well-proportioned and beautiful.
Next, the teacher asked us to cut the symmetrical figures ourselves. I wanted to cut down a big tree, but I had to change it into an arrow for various reasons. When it was my turn to show my "masterpiece", it was already the third place. Some are scissors, some are two hearts, and some are double happiness. .......
The teacher also put a flower on the vase, which is also a symmetrical figure. The teacher also let us learn to make a "symmetrical graphic combination". I made a table, put the arrow on it, and put it on it as a "combination of symmetrical figures" to show.
How interesting this interesting math class is! Let everyone learn mathematics in practice, and at the same time let me realize the wonderful and interesting mathematics. I fell in love with it.