Physics is an experimental science, and the college entrance examination tests five experimental skills based on the curriculum standards and candidates' abilities, with design requirements terminating. This study's evolution in recent years has seen growth in new exploratory experiments within the current specialized high school textbooks, further expanding the scope of questions under the principle of entry-level test question authority.
This strategy reviews some experiments:
1. Pay attention to possible exploitations of book experiments:
In the comprehensive science exam, we don't simply seek problems from a physical experiment syllabus but rather from the experimental textbook, experimenting and innovating, making it the main form of questions. During review and testing, emphasis should be placed on modifying and reconstructing textbook experiments to fully exploit their potential. For instance, reviewing the conservation of mechanical energy experiment from the counter behind the moment timer, calculating speed and height starting from the first point mentioned, can also check conditions. The determination of the variation in gravitational acceleration can be completed as well as a single linear operation for velocity measurement experiments deployment. Another example is whether a pendulum experiment to measure gravitational acceleration can use stones instead? How do you measure? The difference lies in the inability to precisely measure the pendulum line method; by utilizing changes in torque 42L/T12g=g pendulum length using stone length=42(Dgr;1)/T22 torque 42L from formula g=/ (T12-T22 torque) measures two sets of data. Question: What other methods exist for measuring gravitational acceleration? Free fall method, projectile motion, why this pendulum method? Without a stopwatch, isn't there a pulse? This impression on students by teachers, open discussion, and explanation are much deeper. Student learning passively accepting not only improves teaching and research but also increases students' enthusiasm for physical fitness tests and enhances students' experimental design levels through innovative inspiration.
2. Monitoring of experimental and practical skills:
Hands-on topics mean no surgery, no experiment. Emphasizing content in the table of experiments within the course means that each candidate must independently strive to do their best. Real experiments differ from understanding problems and answers; irrelevant to experimental conditions, they certainly bring about flexible use of physical theory, experimental methods, and testing equipment issues. Under school equipment circumstances, allowing individual student requirements to redo the experiment overview as much as possible improves their ability.
3. Pay attention to basic equipment and principles:
From familiar common documents of the physical basis thirteen, they have scales, calipers, micrometers, balances, stopwatches, timers, dot markers, springs, thermometers, ammeters, voltmeters, multimeters, sliding rheostats, resistance boxes, etc. Explaining the experimental device, this principle, only students using tools' basic principles, a tool, can understand its first launch use. In 2003, like a caliper at 50 degrees, if students don't know how to measure length correctly, if the basic structure and principle cannot be read from the high school textbook caliper reading 20.50 sections correctly. Another example is the sliding rheostat's limitation on equipment trials and IT component requirement investigations or gravity flow resistance surveys. Either of the two sliding rheostators (Limited Company and Voltage Division) circuit performance better conditions use only students' understanding. In both cases, basic structure and new tools' principles display experimental device migration principles, cultivating students' abilities to read migrations based on laboratory equipment usage.
4. Strict requirements for each student's experiment writing:
Captain (1): ① Purpose of the experiment, ② Principle, (2) Each student's skills: ① (Miss easy important steps and errors) laboratory instrument usage and reading, ② Steps ③ Data processing and analysis, including experimental data and image processing methods, average test results reasonable error analysis, experimental notes ④, (3) Pay attention to experimental principles and migration test methods in various situations, encouraging students, teachers, and experimental instruments research, indicating measurement volume methods can be reviewed and graduated, what rules, how to write a program please note, with experimental problems. ① Total score, such as power design block knowledge and experiment determining slope or friction balance with horizontal plane, ② Method and dynamic friction coefficient, all electric Lu District Grandma method, resistance measurement, design experiment ④ knowledge test series resistance voltage meter ③ design experiment determining Newtonian dynamics on slopes, design experiment ⑤ knowledge parallel resistance ammeter measurement.
5. Special topic experimental verification:
Summarizing the above points in this stage, it has obvious mechanical testing students: the first timer dot second, T, then run, five, building two, tossing flat majority horizontal displacement speed, who represents the experiment, electrical experiments, U-shaped, direct measurement I, E electromotive force, in Russia, R internal resistance, etc., calculate circuit knowledge, measuring the angle of incidence and refraction refractive index calculation method, refractive index. Comprehensive physics experiment review, experiments, they should, principles, methods, data collection and differences handling classified these experiments in, combining several aspects and trying re-periods from students' recognition. As mechanical transmission, if synthesis and degradation, and from timer dot constant linear acceleration, checking mechanical energy conservation, currently using verification, maintaining momentum, as center of gravity pendulum experiment, where one large board by acceleration measurement in acceleration experiments, we will see exactly these experiments distinction Tiles, you will find these experiments, it is just force F, V more speed and acceleration, displacement S, then only a few issues with mass m. Looking again at how future measurements are taken, we can use similar preliminary mechanics experiment methods to solve. These tests tell us that displacement rulers (high precision among them) can be used in mass, time, point timer, velocity, and acceleration measurements, balance can be achieved through marking and peaceful inverse five-point band speed measurement, which can be thrown out calculated amounts. Is there an electronic experiment album? It tells us that defined types and descriptive experiments can be divided into two blocks of division and data, image data processing, and image processing types that cannot be used in experiments are divided into two parts. Concrete classification blocks allow students their own ideas. For example, medical imaging data, testing electromotive force and internal experiments, why do students draw straight-line graphs resistance? Many tests can be handled this way, such as measuring gravitational acceleration using a pendulum experiment, we measure time T and string length L, choosing books and average method other test formulas, then now we can handle several groups of measured data in the direction LT2/4л2 scanning after points, requiring a straight-line slope g.
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