First, a wonderful classroom evaluation language
Our usual evaluation language stays at "you are so smart" and "you are great". In class 12, Mr. Hua's wonderful language can be seen everywhere. Let me share some excerpts with you.
"Yo, really think. Although you haven't studied it, some people are really right. Some people use their brains, although they can't. I think it's pretty good, too. Young man, bring your protractor to project and show your method. "
"I haven't learned yet, it won't be normal, but I dare to try and deserve praise. I suggest that everyone applaud this spirit of daring to try! "
"I think the people who raised their hands just now and the people who smiled thought the same as her. Admire! However, I think I want to thank this classmate. It was the corner he drew that reminded us. "
"If we have a pair of mathematical eyes, we can see several angles of different sizes on the protractor. Then how to measure the angle with a protractor? Think about it. "
"If you were a protractor, what would you say to your classmates? Write what you want to say, ok? " "Some questions are unclear to Mr Hua."
"That's because Mr. Hua didn't give everyone more time." ……
Second, the unique teaching design
In his class, we can often see "unusual" teaching design. What impressed me the most was the lesson "Angle measurement". For example, in the class of "Angle Measurement", Mr. Hua first created a situation for students to find angles in their lives. Before class, Mr. Hua made a serious effort: at first, he carefully looked for corners in his life, but found it unnecessary to measure them, because most of them were right angles. Later, he found that the angle of the collar in the wardrobe was very different, and then he found that the toothbrush also had a very particular angle, and the backrest of the chair tilted backwards to form a certain angle ... After repeated searching, thinking and discussion, he finally chose "slide show" as the introduction of the topic, which was both interesting and could arouse students' learning needs. The three slides with different degrees of inclination in the situation not only conform to the students' life experience, but also reflect the role of angle, which makes students strongly feel that angle is an important factor affecting the sliding speed (that is, the degree of stimulation). Although students have life experience in this field, almost all slides in reality are standard and safe. Without the contrast and conflict of thinking, students will not consciously think about the essential relationship between sliding speed and angle. "How big is the angle of the slide? To solve this problem, the size of the angle must be measured. " Through the guidance of teachers, students' learning aspirations and needs are stimulated to be "as natural as breathing". Then the teacher created a series of learning activities: let students explore independently and know the protractor; Find the angle on the protractor, draw the angle on the paper protractor and measure the angle with the protractor; Then through the application situation: Who flies the kite high? How comfortable is the back of the chair? Which position has a high scoring rate? ..... Experience the function of angle measurement. It is in such an atmosphere of inquiry, questioning and speculation that students' knowledge and skills are acquired and mastered "as naturally as breathing" under the effective guidance of teachers.
An expert commented: "Hua Yinglong's ingenious design and guidance of mathematical operation activities, the hierarchical development of students' thinking, the grasp of exploring and experiencing the essence, methods and learning process of mathematics, the flexible control of mathematical historical materials, and the ingenious infiltration of emotions and values in teaching have brought us a lot of thinking. "Yes, every worker who loves education should seriously think about it. And thinking needs persistence, and persistence must be rewarded. Just as Mr. Hua's experience is that if we want to break through from the second realm mentioned in Mr. Wang Guowei's "Words on Earth" to the third realm, we need to persist in thinking and innovation. Because "innovative thinking means thinking about every problem for a long time", when you persist for a period of time, you will reach the third realm of "looking for him in the crowd, suddenly looking back, that person is in the dim light". At this level, you will also say "this is what I taught you", and others will express this feeling after listening to your class-"Why didn't I think of that? "
At the end of Mr. Hua's speech: "Things in the world are always subtly and unexpectedly connected, and the key is that it is not easy to find this connection." "Only love this land, love life, love mathematics, will be sentimental. Climbing mountains is full of emotion, and watching the sea is also full of emotion. Let us see more beauty in life and touch our mathematics. I have taken some courses recognized by experts, and some people say that I work hard. In fact, I don't think I am diligent or hardworking. I am enjoying happiness, enjoying my full devotion, and enjoying the favor of mathematics.