Summary of the National Physics Experiment

Summary of the National Physics Experiment

The physics laboratory is the main place for students to study and conduct physics experiments. It is the main resource for physics exploration and learning. The school leaders have always attached great importance to the construction of physics laboratories. This year, new instruments and equipment have been added to create experimental inquiry activities for each student. Good condition.

The purpose and task of middle school physics experiment teaching is to enable students to master the basic physics knowledge necessary for further study of modern science and technology through experiments, and to cultivate preliminary practical operation skills and innovative ability. The focus of teaching is to train students [this The text is transferred to the FFKJ.Net], which is the ability of scientific experiments and the improvement of students' scientific experimental literacy, so that students can improve their self-learning ability, comprehensive analytical ability, practical ability and design innovation ability while acquiring knowledge.

As an important content and important means in physics teaching, laboratory teaching is directly related to whether physics teaching can be carried out smoothly. Therefore, laboratories must establish and improve a scientific and standardized management system and implement standardized management.

The following is a summary of the work of the laboratory for one semester:

First, the key work at the beginning of the school:

The semester experimental plan table and weekly calendar are formulated and distributed to each class teacher, and each class is required to do a one-semester experimental record.

Second, the usual routine work:

1. Formulate rules and regulations, and scientifically regulate management.

2, in accordance with the school's various rules and regulations, and earnestly implemented.

3. Do a good job of supplementing the instruments and equipment; do the lending and returning of the instruments; do the warehousing, registration, acceptance, etc. of the instruments; do the routine maintenance and maintenance of the instruments and equipment; The recording work of the class account is applied to the electronic management of the Chinese software.

4, open enough to open all kinds of experiments, and actively create conditions to change the demonstration experiment as a group experiment, to ensure the smooth progress of the physical experiment class. And actively create conditions to change the demonstration experiment as a group experiment, to ensure that the eight classes in the ninth grade, eight classes in the eighth grade to carry out normal experimental teaching.

5, combined with the school's routine management and special activities, do a good job in laboratory cleaning, keep the laboratory clean.

Special work for this semester:

1. Responsible for the physical laboratory and the school's equipment, equipment subscription, and network reporting.

2. Responsible for the preparation of instruments and equipment for the ninth grade physics experiment operation assessment, so that the ninth grade physics experiment operation test can be successfully completed.

Third, other ideas:

Laboratory work should also be refined. If you encounter bad habits of students in the laboratory, you should also communicate with the teachers in a timely manner to strengthen the education of the students. It is also hoped that the teachers in each class will do the experiment registration work. After the experiment, the students will be urged to do the finishing work of the equipment and the door and window lock. And demonstrate the instrument finishing work on the podium.

Summary of the National Physics Experiment

First, the "three noes" when the scale is used

1. Do not forget to observe the zero line, range and minimum scale value before use.

2. When measuring, the scale cannot be tilted

3. When reading, the line of sight cannot be skewed.

Second, when using a thermometer to measure the temperature of the liquid, "three no"

1. Don't forget to observe the range and the minimum scale value.

2. The glass bubble can not touch the bottom or side wall of the container

3. Glass bubbles can not be exposed to the liquid surface

Third, when reading the thermometer, the "three noes"

1. Cannot read the reading immediately

2. Can not leave the measured liquid reading

3. The line of sight should not be too high or too low, but should be level with the upper surface of the thermometer liquid column

Fourth, when the alcohol lamp is used, "three no.

1. Cannot add alcohol to a burning alcohol lamp

2. Do not use a burning alcohol lamp to ignite another lamp

3. Can't use the mouth to blow out the alcohol lamp

5. The "three noes" when the balance is weighed

1. Do not weigh with an unbalanced balance

2. Do not place wet objects and chemicals directly in the balance pan.

3. Do not put the object on the right disk

Sixth, when using the spring balance, "three no"

1. Don't forget to check if the pointer is zero before use.

2. The force used should not exceed the range of the spring balance

3. Don't forget to check if the spring rubs against the outer casing

Seven, the "three noes" when the ammeter is used

1. When used in series, the positive and negative terminals can not be reversed.

2. The measured current must not exceed the maximum range of the ammeter

3. It is not allowed to directly connect with the power supply without passing through the electrical appliance.

Eight, "three no" when using the voltmeter

1. Do not use in series, should be used in parallel

2. The measured voltage must not exceed the maximum range of the voltmeter

3. Positive and negative terminals can not be reversed

Nine, the "three noes" in the experimental circuit connection

1. Do not close the switch during the connection

2. Do not connect the two poles of the battery directly with wires.

3 ammeter, voltmeter range can not be wrong

X. "Three noes" when connecting a sliding varistor in a circuit

1. The terminal of the sliding varistor cannot be connected incorrectly.

2. When connecting, don't forget to adjust the resistance to the maximum

3. The current that passes cannot exceed the maximum current allowed by the sliding rheostat.

Summary of the National Physics Experiment

Since the implementation of the curriculum reform and the implementation of the new "Course Standards", in order to fully implement quality education and cultivate students' practical ability, all schools have strengthened their emphasis on experiments. In addition, in recent years, the scores of the physics experiment part of the entrance examination questions have been raised, which has aroused the great attention of the schools. Through two years of exploration and summarization, we can see that the teachers in our school have paid more attention to experimental inquiry in physics teaching. The experimental operation ability of the students has also been enhanced compared with previous sessions. This has a very good effect on improving the quality of teaching in our school and cultivating students' abilities. However, in the actual teaching process, we still found that students have some problems in the experimental operation. It reflects that we don't pay enough attention to the experiment in our normal teaching, and it also reflects that the students' requirements in this respect are not in place. To this end, the teaching methods should be improved and measures taken in a timely manner to improve the experimental operation ability of students and

Experimental quality is the starting point of teaching.

First, some typical problems in the process of experimental students

1. The basic tools are not used correctly. The main performances are: '

In the case of using spring force measurement, some students use it directly without zero calibration; when the tension is measured, no reading is made for uniform linear motion; when zero is not used, the position is not used.

When the volume of the measuring cylinder is used to measure the volume of the water, the line of sight is not level with the concave water surface, and even the measuring cylinder is not flat.

When using an ammeter and a voltmeter, use it without a touch; do not pay attention to the appropriate range.

Some students can't correctly connect the sliding varistor and judge the change of resistance.

2, the operation is not standardized, such as

The student's operation is not in accordance with the experimental requirements, and the use of the equipment during the operation is not standardized.

In the experiment of studying convex lens imaging, instead of moving the light screen to connect, the lens is moved to find the image.

The method of wiring the circuit is incorrect; the dial of the watch is not facing the observer; there is no general experience to eliminate the circuit failure, and some even do not connect the circuit at all.

3, back experiments and data, contrary to experimental facts. Many students fill out the relevant contents in the lab book immediately from the beginning. They don't even look at the equipment at all, or even fill in the experimental conclusions, data, and then experiment. The experimental data does not match the data filled in, such as

In the experiment of observing the convex lens imaging, the conclusion was filled out on the list without receiving a clear image at all. ,

In the experiment to study the balance of leverage conditions, some students first completed the experiment by filling in the data and conclusions in the records; some students always adjusted the arms on both sides to be the same size.

In the experiment of measuring the mechanical efficiency of the pulley block, the phenomenon of students' back data and conclusions is particularly prominent. In addition, in the experiments of measuring the average speed of linear motion, measuring resistance, measuring the power of small bulbs, and exploring the relationship between the mass and volume of the same substance, the back experimental data and conclusions are also common.

4. Do not think about the rationality of your own design. If you explore the kinetic energy and what factors, it is not strictly as required to control the height; on other issues, it is not paying attention to let "other quantities remain unchanged."

Second, the reasons for the above errors can be seen from the above phenomenon, some students are relatively blind in the experimental operation, lack of certain experimental operation skills. Some problems exist in some schools or individual students, but it reflects that some of our teachers do not have the experimental operation skills training for students in the usual teaching, but do experiments for experimental operation tests. Teachers neglect the guidance of the cultivation and methods of students' abilities. Secondly, there are too few opportunities for teachers to teach students when they are reviewing students. The teacher talks too much, does too much to do, and consciously provides some data and conclusions for the students to remember. Some school teachers are too dying when guiding students to review, such as using ammeter, voltmeter to measure resistance, measuring the power of small bulbs, measuring the mechanical efficiency of the pulley block, measuring the average speed, observing the convex lens imaging experiment, the teacher first put some The data is stipulated for the students, and the students are allowed to experiment according to the data previously conceived by the teacher. These practices obliterate the independence and flexibility of students' thinking, and foster the dependence and closure in experimental operations, which is not conducive to the development of students. .

Through these several experimental operation exams, we also found that some students in the school have a strong overall experimental operation ability, which is inseparable from the usual teaching and post-training. In order to improve the experimental operation ability of students in the future teaching work, we should strengthen the experimental teaching, cultivate students' experimental operation ability, and cultivate students' rigorous scientific attitude. Only in this way can we cultivate people with innovative spirit and practical ability.