famous teachers' business cards:
Zhou Wenjie, physics teacher at Wuhan Tianmendun Middle School, outstanding young teacher in Wuhan, member of the Jianghan District Physics Center Group, and outstanding class teacher at Jianghan District .
Students frequently ask, what is physics? As early as in " University ", the idea of "studying things and seeking knowledge" was mentioned. "Studying things and seeking knowledge" was about exploration, "knowing things and seeking knowledge" was about exploring all things in life, finding and obtaining the universal laws of all things.
■ Physics learning requires "understanding the truth"
It is also the basic idea of physics learning. Physical knowledge comes from life. When studying, you need to move from life to physics, from physics to life, and understand "reason" with "things". In spring, all things resurrect and the fragrance of flowers is everywhere; in summer, the water sprinkled on the ground will dry out in a while; in autumn mornings, there are dewdrops on the leaves; in winter, comb your hair, and your hair runs with the comb... All year round, we can use the physical phenomena around us and the experience of life to "understand the truth".
has a ballpoint pen and a fountain pen on hand. We can experience rolling and sliding friction. A round water cup can experience the pattern of convex lens imaging. You can also fill an inequality of water into a glass soda bottle. By tapping it with a pen, you can hear different tones. With the help of the items around us, we can also "understand the truth". Learning physics requires eyes that are good at observing, mind that is diligent in thinking, hands that dare to practice, and things around you that can "understand the truth".
■ Physics learning requires "understanding"
Learning physics based on understanding is the basic orientation. Physics is an experiment-based discipline that requires in-depth understanding and thinking. The so-called understanding is to master the ins and outs of every physical quantity, every formula, and every experiment. For example, in the ninth grade experiment, Joule law, put resistive wire into a closed container filled with equal amount of air, why does the resistive wire be hot? Why is the air hot? What happens if the air is hot? What phenomenon do we reflect how much heat the current generates through the conductor? How to design a circuit diagram with the method of controlling variables?
Only by truly designing experiments and experiencing each process can you truly understand, and only by thinking and understanding can you calmly answer various questions. If you just memorize the knowledge points listed by the teacher, you may forget today and tomorrow. Memorization based on understanding is the secret to scoring.
■ Physics learning requires "organization"
Focusing on organizing is the basic method to learn physics. Physical knowledge and laws are often relatively abstract, and they need to be sorted out and summarized after learning. This not only helps to accurately understand the formation of concepts and master scientific laws, but also allows you to understand the knowledge you have learned at a deeper level. The content compiled by
can be a table that mainly distinguishes the similarities and differences of concepts that are easy to mix, a knowledge framework diagram that mainly sorts out the concepts, rules and formulas of chapters, or a summary of the wrong questions and variations of the wrong questions. What is important is not the form of sorting, but the awareness of sorting. The contents compiled by everyone will be different. The best sorting is the one that can answer questions and answer questions.
For example, in three experiments in electricity, they explore the relationship between current and voltage and resistance, measurement of resistance, and measure the electrical power of small light bulbs. The circuit diagrams of these experiments, the role of sliding rheostat , the purpose of multiple measurements, experimental conclusions, corresponding images, etc., all have similar and different aspects. If they can be presented in front of you in the form of a table when sorting, it is easy to compare and deepen your understanding.
■ Use "misconception" to learn physics well
Use "misconception" to serve physics teaching is a skill to learn physics. In the process of physics learning, we must have some wrong pre-cognitions. If used reasonably, it will not only not form obstacles, but will instead help to build correct concepts.
For example, stress analysis is the focus of learning in the eighth grade of junior high school physics. It is a common "misleading": an object is pushed but not moving because the thrust is less than the friction, so it cannot be pushed.When studying, if you can use the knowledge you have learned to flexibly apply it with the knowledge you have learned under the premise of "understanding the truth" with objects and deepening your understanding, it is not difficult to think that the thrust is equal to friction, and this object will only stop when it is subjected to the balance force . This process can not only overturn the cognition before mistakes, but also deepen the understanding of the stress and movement state, and have a sense of success after learning.
■ Do not enter the "fog"
Physics is a rigorous scientific discipline. If you study it in a vague way, you will only be in the "fog" and you will not be able to learn the essence of physics. As long as we have a realistic scientific inquiry attitude, bold assumptions, careful scientific inquiry ability, and scientific inquiry spirit that can break the end of the casserole, we will surely clear the clouds and keep the clouds open. (Zhou Wenjie, physics teacher at Tianmendun Middle School, Wuhan)
[Editor: Liu Yan]
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