Create the "DingDong Doorbell" project teaching case

Abstract: Under the guidance of the new curriculum reform concept, project-based teaching method has achieved mature theoretical research, widespread application, and development in China. Major vocational education institutions have begun to adopt project-based teaching methods to cultivate students' practical hands-on ability, social skills, and other key abilities, further laying the foundation for the cultivation of innovative talents.

  The course 'Electronic Skills and Practice' is a professional course with strong theoretical, practical, and applied aspects. In order to make it more in line with life and more suitable for the actual situation of students, it emphasizes the good study habits of students' independent learning and problem-finding and problem-solving. It aims to integrate theoretical knowledge with practical ability organically, so I have selected the project 'DingDong Doorbell' for teaching cases in the 'Electronic Skills and Practice' project teaching. Through the joint efforts of teachers and students, we have achieved good results. The teaching design and implementation process are briefly introduced as follows:

Teaching Project

Project Task Content: Use a 555 integrated circuit to create a doorbell with a ding-dong sound.

Production time: 5 hours

Project-based teaching objectives

1. Through the study of this project, students should be able to understand the project task book, understand the circuit principle diagram in the task book, analyze the working principle of the circuit, and clearly define the production evaluation requirements and grading standards based on the project training evaluation.

2. Familiar with the circuit principle diagram and able to draw the circuit principle diagram with Protel99se.

3. Proficient in using a multimeter to check the quality of various components.

4. Proficient in using various welding tools to complete the connection of circuits according to the circuit principles and technical requirements.

5. Proficient in using electronic measurement tools to complete the debugging of circuits and fault elimination.

Project-based teaching implementation

In the educational activities of student activities, the process of student actions as the main body of the activity is as follows:

1. Accept the project assignment and analyze the tasks (approximately 1 teaching hour). Each group leader distributes the project task book to students, requiring them to read the tasks and requirements in the book carefully, and clearly understand the indicators of each task.

2. Prepare the tools (approximately 1 teaching hour). Collect the materials, equipment, and computer needed for the production of the DingDong doorbell, prepare the production tools, and make all necessary preparations. Ensure that the personnel are well-organized and that safety measures are in place.

3. Drawing the Schematic Diagram of the Doorbell Circuit (Approximately 1 Hour). Students will go to the Electronic CAD Laboratory to draw the schematic diagram of the doorbell circuit.

4. Making a DingDong Doorbell (approximately 2 teaching hours). Students will identify and test components using a multimeter according to the project task book, complete the installation and connection of the DingDong doorbell circuit using soldering tools, and debug and troubleshoot the circuit using electronic measurement tools. During this process, students are required to work in teams to divide the labor and collaborate to complete the task. For example, male students can be responsible for component testing, female students can be responsible for component shaping, and both male and female students can jointly undertake circuit testing and troubleshooting. In addition, throughout the circuit construction process, the concept of "safety first" should always be adhered to, especially when using a soldering iron for soldering operations, it is necessary to pay attention to personal safety, and to strictly follow the 9S management requirements, keeping tools and equipment neatly arranged, cleaning the work area, paying attention to electrical safety, and carefully filling in the activity records and equipment usage records, etc.

5. Project Training Evaluation (approximately 1 teaching hour). After completion, students will first self-evaluate, followed by peer evaluation within the group, and then the teacher will conduct a comprehensive evaluation. The project training evaluation score will be used as part of the regular grade.

6. Summary and Exchange (approximately 1 teaching hour). Students share their experiences and insights on the various problems or situations they encountered during the production process, as well as their performance in their abilities, and engage in summary and exchange with other classmates.

Teacher ActivitiesIn teaching activities, the main task of the teacher is: to formulate the project task book according to the project, distribute the project task book to each group leader, briefly describe the task requirements, assist students in preparing equipment and tools; inspect the circuit principle diagram drawn by the students; in the production stage, on-site guidance for students to use tools and install and test circuits; help students solve various problems encountered in the production process; targeted combination of production operations and problems, guiding students to learn related knowledge, such as component formation, overall beauty of the circuit, circuit testing, 555 working principle, technical requirements, etc., strive for the theory to combine with practice, the theory close to the actual. In the production, the teacher should also check every task in the process, strictly require the production process quality, and record the situation of inspection as a evaluation of students' materials. After the completion of the production, the teacher should make a comprehensive evaluation of students in terms of tools and instruments, component installation, wiring technology, self-learning and management, application of learned knowledge to solve practical problems, team collaboration, mutual communication, safety awareness, habits and knowledge mastery, etc., and give excellent, qualified, unqualified, and guide and correct the errors. In addition, "

Company Profile

 AiGou Toy Factory was established in 2007. After ten years of unremitting efforts, our company has gradually matured; Our company is a member of the National Ministry of Education Teaching Equipment Industry Association, a backbone enterprise of Zhejiang Province's teaching equipment, and the company has been awarded the "Heavy Contract and Credit-Keeping" unit for three consecutive years by Yiwu City. In 2014, it was designated by the Zhejiang Provincial Education Bureau as the "Culture and Popularization Experiment Equipment Fixed-point Production Unit".

AiGou Company is a high-tech enterprise that integrates modern scientific research and development, educational equipment, curriculum design, teaching resource integration, and technical services. AiGou, with its high-tech products, is a professional enterprise in the development and production of popular science experiment teaching materials in the country. The products are exported to Europe and the United States.
 After years of accumulation, the company has initially reached a certain scale. In terms of technological innovation, the company has professional design personnel engaged in the development of scientific education products and the upgrade and replacement of existing products. In terms of production, management, and service, the company strictly implements the standards of the ISO9001 international quality assurance system. In marketing, the AiGou products have been entered into many provinces and cities in the country and enjoy a good reputation. For many years, it has provided high-quality, advanced, professional series of modern teaching equipment and professional equipment research and development custom services for the educational community. With excellent, high-quality professional talents and perfect after-sales service, it ensures the excellence of product quality and establishes a good corporate image. The scientific education physical series, chemical series, photovoltaic, wind energy, geography, biology, art and other products of Qiquan have successfully won bids in the education bureau tenders many times.

 AiGou Company continues to adhere to the business philosophy of 'quality first, service to diligence, honesty in conduct', providing excellent equipment and high-quality service for school teaching and research. We are willing to work diligently with new and old friends at home and abroad, work together, and devote our utmost efforts to education, dedicated to the cause of education.

 Love to buy allows every child to keep up with the times!!!