Chen Cheng's projects involve related disciplines-

Chinese, Mathematics, and General Technology Project-Physics Topic Background-

When I wanted to make a small production, I thought of using some waste. The problem of energy shortage in today's society is becoming more and more serious, and it is chilling to think about the prices of gasoline and natural gas. Therefore, as middle school students, we should do our best. After all, resource problems and environmental problems are problems that all of us must face. If it is made of waste, it can save energy and money more or less. The transformation and reuse of waste should help to improve everyone's awareness of environmental protection, although it is only a small matter.

We didn't know what to do at first, because we were going to make things out of waste, and we wouldn't do anything too difficult. Later, because there was something wrong with our original flashlight, we remembered to do it. It's not too difficult to make a flashlight. There are ready-made products for reference. Although it is not difficult and not creative, it can also exercise our hands-on ability.

You shouldn't be able to make anything exquisite from waste. However, no matter what the final result is, we will certainly learn a lot through this research-based learning activity, such as teamwork skills, and maybe we will have a new understanding.

Project conditions-

Small light bulb, wire, 1.5V dry battery, cardboard, adhesive tape, simple switch, discarded beverage bottle.

The purpose of Internet research-

Enhance people's desire to learn physics and other knowledge, improve our hands-on ability, publicize environmental awareness, realize multi-purpose, recycling and improve resource utilization. The main research methods-

group discussion

Find information online

The basic idea of doing model research is-

Take apart a finished flashlight sold in the market, study its working principle, draw the circuit diagram, connect the abandoned beverage bottles according to the circuit diagram, test the brightness level and stability after the model is completed, and finally make the finished product.

Scientific, advanced and practical research-

Innovation is not high, but it is practical, scientific and advanced.

The basic process of research-

We studied and became familiar with the flashlight products sold in the market, drew the circuit diagram, and calculated the energy consumption and voltage to determine the materials. After selecting the materials, start making models. After the model is completed, we test its performance and adjust its brightness. Then the finished product is made, and the appearance and feel are improved. Major contributions of members in the project-

Confirm the theme-Yan Xiaolong and Lin Aoyang

Data collection-Lin Aoyang, Ding

Collating data-Lin Aoyang, Jin Yongqiang, Wang Xianchao

Production method-Lin Aoyang, Ding

Collecting data-Ding, Chen Linglong, Wang Xianchao

Production-All Members

Write the opening report-Lin Aoyang and Ding.

Write the closing report-Lin Aoyang and Ding.

Publication of works-Yan Xiaolong

Members' research experience-

Yan Xiaolong: Through this research study, I understand a truth, practice produces results, and the group is strength. It also makes us more cohesive, makes us more aware of the magic of technology, and makes us more interested in technology.

Lin Aoyang: Although this topic is very simple, it is not so easy to do, because some imaginary things will become complicated when practiced together, and some small places will tell us that some deficiencies in perfection will bring some trouble. However, we all overcame it. The important thing is that we learned a lot from it, learned to discuss and learned to make.

D: Through this activity, I have a stronger sense of teamwork, further improved my coordination ability and teamwork ability, improved my hands-on ability and environmental awareness to a certain extent, and thought more comprehensively. If I have a theory, I must practice it. If I want to develop in an all-round way, I have to practice more and take part in such activities.

Jin Yongqiang: Although the flashlight looks like a simple handmade work, it shows the knowledge of physics. After this small production, our hands-on ability has been strengthened. At the same time, it also shows the efficiency and importance of team work. One person can't be perfect. Only by teamwork can our works stand out.

Wang Xianchao: In this research study, I realized the hardships and hardships of scientists. It is so troublesome to make such a small electric light, let alone find miracles from life. After experiencing this topic, I became more aware of my own shortcomings. In the future social study and life, I will work harder to explore the unknown world. When facing setbacks, I will face them bravely and overcome them bravely.

Chen Linglong: Research-based learning allows us to know something we don't often touch earlier. This research study made me think a lot, and understood that knowledge is power, and teamwork is the most important truth. This time, I also grew up a lot, leaving me with a single study life and more different life experiences.

Suggestions and ideas for further improvement-

Draw a color picture on the surface of the flashlight.

Install plastic decoration on flashlight.

Put a handle on the flashlight.

Use rechargeable batteries to protect the environment.

Abstract Chinese-

Out of environmental awareness, waste materials are used for transformation to turn waste into treasure.

Due to the limitation of materials, our group carried out the research work of flashlight. First, we designed the circuit diagram to form the path, and calculated the energy consumption and voltage to determine the material, so we chose several small bulbs, several wires, several 1.5V dry batteries, several pieces of hard paper and a roll of tape, and a simple switch.

First of all, we connect several dry batteries in series and fix them with adhesive tape, and connect both ends to one side of small light bulbs and switches with wires and fix them, so as to connect several small light bulbs and switches in parallel and in series. Then fix the battery bulb and switch together with hard paper and seal it with adhesive tape. This is almost finished, and finally the decoration of the work. Abstract English-

We can't live without light. The flashlight is useful when we are in the dark. It's our first to make a flashlight. Wediscusshowtomakeetlook beautiful and special. Because of equality, flashlight. By working together, she thinks it will be a good thing. Teamwork may help us work together and cooperate with others better. It is also very important to listen to other people's advice. We will do our best. Key words-

Flashlight, flashlight lists research materials-

Manufacturing technology: drill a small hole in the middle of the board with an awl, bend a paper clip into a hook shape, and fix it on the board through the small hole perpendicular to the board, just hang the washer on the hook. Then take two paper clips and straighten them in half, leaving only one corner. In fact, the straight part is the arm of the balance, and the remaining curved part is the tray. Another paper clip does the same thing. Then use the middle washer to weld the two paper clips together, and the paper clips should be in a straight line. Then hang the washer on the hook, adjust the distance between the hook and the board, about 3 mm, then fix two paper clips under the two trays, and prepare led as the indicator light next to the paper clips. A circuit is arranged under the board, and the balance is equivalent to a single-pole double-throw switch. This circuit is equivalent to two loops, using a power supply and two light emitting diodes. As long as the left side sinks, the tray on the left side will be connected with the pin below him, so that the circuit will be connected and the diode will emit light; If the two sides are equal in weight, the circuit is blocked and both diodes are not lit.

Flashlight brightness level information: The reason why reading and writing in the dark has a bad effect on the eyes is that the light is too dim to make the eyes unable to see clearly what they see or write clearly. In order to see the target clearly, your eyes will be closer to the target, and you will catch it carefully. After a long time, the refractive system of the eyes will naturally change and myopia will occur. But isn't the brighter the better? Too bright light is not good. Light can be divided into brightness and brilliance. When the brightness is moderate and too strong, it will make people feel dazzling or dizzy, and the subtle places can't be seen clearly. The burden borne by the eyes will naturally increase, and the ciliary body is in a state of tension, which is prone to eye fatigue.

Research results-

Completed the analysis of the research results of a finished flashlight-

The finished flashlight is still a little rough and not exquisite enough, and all aspects need to be improved and strengthened, especially the man-machine relationship.

Research recommendations-

Seek more advice from teachers, especially general technology teachers, to make the relationship between people and computers more harmonious.

After the finished product is made, please try the accessories (small production, small design, photos, models, design drawings, etc.). , small paper with longitudinal description, experimental report, investigation report, interview report)—

Upload file/200905/20090530152245139.rar.