On June 23, the much-anticipated SWR's first annual meeting of physics innovation experiments in junior high schools has officially come to an end, but a large number of experimental schemes emerging from the event site are still worth learning from. This is a stage for thinking and exploration, and it is an audio-visual feast to show the creativity and wisdom of teachers. Here, we see the teachers' distinct views colliding with each other, see the creative experimental scheme, see the teachers' professional ability and innovative spirit, but also see their responsibility and feelings. "Bold exploration, repeated experiments"-let's appreciate the teachers' "intentional creativity" and appreciate the experts' unique insights together!,

Innovative Experimental Scheme · Highlights

Li Jin

He is now a senior physics teacher and subject leader in junior high school in Jiangsu Province, and works in Bayi Ji Junior High School in Pizhou City, Jiangsu Province. He has won the first prize of the first innovative teaching aids competition in Jiangsu Province, the third prize of Jiangsu young teachers' basic skills competition, the first prize of Xuzhou young teachers' basic skills competition, and the second prize of Xuzhou experimental skills competition. He has won the honorary title of Xuzhou discipline excellent teacher, and has won the honorary title of advanced teaching individual for many times. He is good at innovative experimental research. As a specially invited expert, he participated in the lectures of Jiangsu Provincial Teacher Training Center and published dozens of articles in national and provincial journals.

　　

 

Experiment: "Using sensors to study the funnel blowing table tennis"

Use sensor: SWR absolute pressure sensor innovative experimental program highlights: when people use the funnel to blow down the table tennis ball, the table tennis ball will not fall. What is the specific reason? The innovation of this experiment by Mr. Li Jin is that through the SWR absolute pressure sensor, the pressure above and below the table tennis ball inside the funnel can be measured concisely, conveniently and accurately, and the experimental data is visually displayed, and the effect is obvious. Compared with the traditional experiments in the textbook, the highlight is that students can intuitively recognize the relationship between fluid pressure and flow rate, help students construct knowledge and enhance data awareness.

Dong Chao

After 12 years of teaching, he has been a junior high school physics teacher in Shenyang Xingtan Middle School, and won the title of Shenyang Tiexi backbone teacher, the first prize of the National Teaching Competition, and the pioneer of Shenyang teaching reform.

　　

 

Experiment: Liquefaction Heat Release

Instruments used: liquefaction exotherm demonstrator, Suwell temperature sensor

Highlights of the innovative experimental scheme: The experiments in the teaching materials cannot prove that the liquefaction of gas releases heat according to the temperature rise of cold water introduced into water vapor, because water vapor is high temperature, and the temperature rise of cold water may be caused by heat transfer, and the total mass of water will increase after introduced into water vapor liquefaction, thus the experiment is not convincing.

The liquefaction exothermic tester designed by Mr. Dong Chao mixes the same quality of 100 ℃ hot water and steam with the same quality of cold water respectively, and the temperature rise of cold water is different. Temperature data changes can be read intuitively through the SWR temperature sensor. The setting of the contrast experiment explains the principle of liquefaction heat release more scientifically.

Leung Chi-cheng

　　

Guangzhou Zhixin middle school physics teacher, experimenter. Guangzhou Education Bureau, co-sponsor of Cotton Maker Space, head of Guangzhou Zhixin Middle School Maker Space (M35). I am committed to the innovative training of students and the design of curriculum activities, as well as the integration of physics, engineering, computer courses design and innovation. Since 2006, we have independently developed the course of "Sensor and Innovative Physics Experiment" and participated in the construction of a number of characteristic science and technology education projects in the school. Cumulative tutoring students won more than 20 national, provincial and municipal awards, and three student engineering projects were authorized by the national utility model patent. He wrote 7 papers related to education and teaching aids, and won 3 national paper awards and 3 provincial awards. The textbook "NI mydaq and innovative physics experiments" was published by Tsinghua University Press.

 

Experiment: "listen out" uniform acceleration linear motion "," antique inclined plane experiment"

Instruments used: self-made teaching aids, SWR dynamics system, photogate sensor

Highlights of the innovative experimental scheme: the innovation of the experiment lies in the comprehensive use of multi-sensory integration of hearing, vision and touch, so that students can adjust the position of the magnetic induction switch while listening to sound and observing waveforms, so as to obtain four positions with the same time interval during the acceleration and decline of the car, and the square proportional rule between the uniform acceleration linear motion distance and time is obtained from the perspective of experiment. Using information technology and sensor technology to reproduce Galileo's experimental device for exploring uniform variable speed linear motion.

It can be applied to the demonstration or grouping experiment of the chapter of uniform variable speed linear motion to help students obtain the rule that the distance is proportional to the square of time. It is easier to observe and observe the results more accurately than the method of using the metronome guide in the previous textbook.

Li Hongmei

　　

Twenty-five years of middle school physics teaching experience, focusing on physics teaching research, classroom management model research and proposition research, many times participated in related teaching seminars in Yunnan Province, Kunming City, and provincial and municipal junior high school level examination proposition work, currently serving as Yunnan Normal University Associate professor of the School of Physics and Electronic Information, engaged in teaching related courses of Yunnan Normal University. In 2011, he won the first prize of the 6th National Middle School Physics Teaching Reform and Innovation Competition; in 2012, he won the first prize of the third "National Middle School Physics Teaching Teacher Competition. He has presided over the provincial project "Research Project on the Cultivation of Students' Creative Ability in Junior High School Physics Experiment Teaching" and successfully passed the final project at all levels. Invited to serve as a ministerial, provincial, and municipal review expert for the "One Teacher, One Excellent Class, One Class, One Teacher" activity "Excellent Class"; participated in the revision of "Yunnan Province Junior High School Academic Level Standards and Examination Instructions", and served as the junior high school for many times The main teacher of the school level examination review seminar.

 

Experiment: Balance of Two Forces in Uniform Linear Motion

Use of instruments: self-made teaching aids, force sensor

Highlights of the innovative experimental scheme: The study of the two-force balance in the textbook is limited to the horizontal or vertical direction. Does the force of the object moving at a constant speed in the oblique upward direction conform to the two-force balance principle? Teacher Li Hongmei uses a belt to pull the object to make a uniform linear motion, and the force sensor can accurately measure the pulling force, thus verifying the balance between the pulling force and the gravity of the object. It is helpful to cultivate students' preliminary inquiry consciousness, so that students can better understand the principle of two forces balance, which is of great help to teaching.

Chen Meiqin

　　

 

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Senior middle school physics teacher in Jiangsu Province, now working in Taizhou Experimental Middle School in Jiangsu Province. The first batch of teaching experts in Taixing City, excellent class teacher in Taixing City. He has been responsible for the teaching and research of junior high school physics for a long time. The normal classroom pays attention to innovative experimental teaching, and focuses on cultivating students' innovative spirit and practical ability. Classroom teaching lively, humorous, self-contained, loved by students, teaching effect is good.

Participated in the compilation of Taizhou City's "Taiwei Class 9th Grade Guidance Case". Publications above the provincial level published 7 teaching papers, won 16 provincial and municipal paper awards, won the first prize for the municipal basic teaching quality class competition and lecture 3 times, in the past three years, the national "one teacher, one excellent class" Taizhou City-level excellent class 3 times, Jiangsu Province-level excellent class 1 time, and participated in the Taizhou City backbone teacher assessment twice were all excellent grades, actively participate in research at all levels and successfully concluded 6 times.

Experiment: Rough Measurement of Atmospheric Pressure by Sensor

Instrument used: self-made teaching aids, SWR force sensor

Innovative experimental program highlights: the use of sensors instead of spring dynamometer to measure atmospheric pressure, the experimental operation is simple and convenient. With the help of the SWR force sensor, students do not need to read the reading of the spring dynamometer during the experimental operation, but can concentrate on observing the instantaneous change of the pulling force. After the experiment, they can easily find out the ordinate value corresponding to the line segment parallel to the X axis with the atmospheric pressure on the image in the SWR digital experimental software.

Ma Shusheng

　　

After graduating from Huaibei Coal Normal University in 1987, he taught in a middle school and obtained a patent for a utility model of "TV surveillance camera device. Now he works in Huainan No.1 Middle School in Anhui Province. He is good at innovative experimental research. He has always insisted on demonstrating experiments for students with self-made teaching aids. He has been rated as a senior teacher in Huainan Middle School and won the first prize of excellent self-made teaching aids in Huainan. The teaching aid for demonstrating resonance is made up of common hacksaw blades. The rolling iron ring played by the children became an artifact in teacher ma's hands to demonstrate friction and work. Even empty egg shells have become good props to demonstrate electrostatic action. In teacher ma's eyes, there is nothing completely useless, only materials that are temporarily unavailable.

 

Experiment: Conversion of Magnetic Potential Energy into Kinetic Energy

Use of instruments: homemade teaching aids

Highlights of the innovative experimental scheme: the use of self-made teaching aids to vividly display the magnetic field potential energy also shows the relationship between work and energy, that is, moving the magnet hard to do work on the system and converting it into magnetic potential energy. The magnetic potential energy is converted into kinetic energy, which makes the steel ball move quickly and has a strong perspective impact. This experiment is helpful for students to understand the negative potential energy.

Lian Wu

　　

Junior high school physics senior teacher, division-level subject leader. Actively participate in the provincial project research, promote the teaching reform with the project research, and become the leader of the junior high school physics discipline of the Sixth Division of the Corps. He has won the first, second and third prizes of the national and bingtuan physics young teacher innovation and famous teacher competition for many times, and has achieved fruitful results in professional literacy. Eight papers written in recent years have been awarded. Participated in the compilation of 6 volumes of local teaching materials of "Science and Technology Education Activities" in junior high school of XPCC, planned and edited a series of books on the introduction of general culture into the campus of Wujiaqu No.1 Middle School and 14 school-based teaching materials such as "The Story of the Head Teacher", "Classics of Chinese Studies" and "Education of Respect.

 

Experiment: "Measuring the True Density of Coke", "Exploring the Factors Affecting the Size of Friction"

Instruments used: Suweir intelligent digital experimental disc, force sensor, pressure sensor

Innovative experimental scheme highlights: the use of the Sowell pressure sensor to more accurately (indirectly) measure the volume of particles and porous substances. When exploring the factors that affect the size of the friction force, the use of force sensors instead of spring dynamometer measurement is more accurate, to solve the shortcomings of unstable dynamometer readings in the process of movement, data acquisition process visualization, more conducive to students' understanding.

Xiao Yongqin

　　

Physics researcher, Fuzhou Institute of Education

 

Experiment: "the expansion and extension of the electric power experiment of measuring small bulbs"

Use instrument: Suwell current sensor, voltage sensor

Highlights of the innovative experimental scheme: When Mr. Xiao Yongqin uses sensors to measure the electric power of small bulbs, he can more intuitively study the relationship between the power in series circuit and the resistance, current and voltage of small bulbs and sliding rheostats through digital experimental software, replacing the traditional drawing point drawing and formula calculation, and using comparative analysis of two images with the same coordinate system to make it easier for students to understand.

Wang Jiangang

　　

Excellent Teacher of Shengze No.2 Middle School, Wujiang District, Suzhou City

 

Experiment: "magnetic electricity", "energized wire movement in the magnetic field"

The use of instruments: homemade magnetic field on the current of the role of the demonstrator, micro-current sensor

Highlights of the innovative experimental scheme: the use of self-made teaching aids innovatively demonstrates that "conductors can generate induced current when cutting magnetic induction lines in a magnetic field". with the help of SWR's intelligent digital experimental disc and micro-current sensor, the micro-current generated in the experimental process is accurately collected in real time, and the abstract experimental principle is intuitively and vividly explained. The experiment of "electrified wire moving in a magnetic field" shows a unique way, making it easier and more intuitive for students to understand.

Expert · Comments

Tang Jinbo

　　

In 2010, he was named a junior high school physics teacher in Jiangsu Province. Editorial Board of Physics Committee of Chinese Education Association, Middle School Physics, Nanjing Normal University, Friends of Physics. The pursuit of language humor and wit in classroom teaching. In 2009, he was rated as one of the top ten famous teachers by Rugao Municipal People's government. In the same year, he was rated as "advanced individual in new textbook experiment" by provincial teaching and research section ". As a moderator or core member, he participated in five provincial research projects and concluded them. In recent years, Tang Jinbo has successively conducted training lectures for teachers from 11 major cities in the province and other provinces, municipalities and autonomous regions except Beijing and Shanghai. In particular, as the initiator of the national "student independent innovation experiment", the results of his six years of painstaking research have attracted the attention of his colleagues in China. The Jiangsu Provincial teacher training Center invited him to serve as the host of the online course of "innovative Physics experiment". Around the "student independent innovation experiment", he published a series of papers from the aspects of operation, thought, art and so on.

 

Teacher Tang comments:

These programs are very innovative ideas, let a person shine at the moment! With the help of SWR's digital sensor, the experiment results are very good!

teacher tang's innovative experimental view:

Innovative experimental growth route: research teaching materials, find problems, design schemes and optimize solutions. If you get up to follow the gourd and tell the textbook, the innovation experiment will gradually leave. She won't favor you if you don't insist on the innovation experiment. There is no enlightenment at all, only the willows and flowers are constantly groping.

Creating situations and thinking processing are important links in physics innovation experiment teaching. It is still quite difficult to design problems based on innovation experiment situations. Playing experiments requires deep play, teaching and learning, cultivating good thinking habits, resolving teaching difficulties, stimulating learning interest and strengthening thinking processing.

Conclusion

Teachers show wisdom, Sowell has feelings; advanced experimental equipment and avant-garde forms of cooperation. SWR's first annual meeting of junior high school physics innovation experiments expanded its influence through innovative organizational forms, and the future of innovative experiments using digital sensors will be better.