High school information technology "network database information retrieval" teaching plan 1: 1. Teaching purpose:
1, deepen the understanding of file types and the use of download tools.
2. Experience the network database information retrieval.
3. Deepen the understanding of legal use of network information.
4. Remember the websites and usage of several commonly used network databases.
Second, the teaching focus:
1, experience information retrieval in network database.
2. Remember the websites and usage of several commonly used network databases.
Third, teaching methods:
Task-driven, combining classroom teaching with computer room practice
Fourth, the teaching process:
(1) Introduction
Using the network is the main way to obtain information, which can be divided into conventional information acquisition and network database information acquisition. We first review the acquisition of conventional network file information, and then learn and experience the acquisition of network database information.
(2) Review
Let's collectively review how to use google search engine and flashget download tool to complete the files we need through the network.
(C), the new classroom knowledge explanation
1. What is a network database?
Network database: The combination of data and resource sharing has become a widely used network database (also called WEB database). It is a system which is based on the background database, plus certain foreground programs, and completes data storage, query and other operations through the browser.
2. The general process of network database information retrieval.
Take the Compulsory Education Law as an example
Highlight key points: define objectives, refine keyword input, and implement evaluation and adjustment process.
3. Experience various network databases (demonstration)
First, the education resource library:
China Basic Education Network: ki.net/index.htm
Encyclopedia of China:
C, online library
National Library of China:
Shanghai Library:
D, online entertainment and shopping malls
Baidu Music Website:
E. digital city
Digital Beijing:
Electronic map:/retrieval? Computer software protection regulations? And then what? Measures for the administration of international networking security protection of computer information networks? .
Create problem situations and set tasks for students, define goals, arouse students' thinking and resonance, arouse students' enthusiasm and initiative in learning, and enter the learning process of independent inquiry with questions.
3. Hands-on operation, preliminary experience
Students experience and discuss the operation in the form of group cooperation (6 people in each group), and teachers inspect the students' operation and give guidance in the process.
Through the above experience, guide students to put? Legal database? Compare with search engines, and then understand the database.
Teachers and students sum up together:
Concept of database: Database is a system for managing and storing information, from which we can query and count information. It has widely penetrated into all aspects of social production and life.
The characteristics of the database: the information resources included are professional, the theme is clear, and the retrieval relevance is high. The resources in the database are strictly screened before storage, with high quality and strong authority.
Guide students to list examples of databases around them.
Guide students to think: the concept of network database is much more in front of the database? Network? This word. So what are the main characteristics of the network? Through such guidance, some students realize that the main feature of the network is resource sharing.
This leads to the concept of network database: it mainly refers to those carefully organized databases that provide network access. But not all online databases are open to us, and some need to pay to get a pass.
Principle of network database: The network database is that users use the browser as the input interface, input the required data, the browser transmits these data to the website, and the website then processes these data. For example, storing data in a database, or querying a database, etc. Finally, the website returns the operation result to the browser, and informs the user of the result through the browser.
In the process of retrieving two laws and regulations, students not only understand the concept, principle and general retrieval process of network database, but also learn legal knowledge about computer network and software, so as to cultivate students to abide by network ethics, acquire network resources and use legal software in a standardized and legal manner.
Because the concept and principle of network database is a difficult point in teaching, the content is abstract and difficult for students to understand. Here I'll let the students experience it first? Legal database? Let them have an intuitive understanding of the network database, and then take a step-by-step approach from? Database? And then what? Network? This paper introduces the concept and principle of network database, and breaks through the difficulties in teaching. On this basis, the general process of information retrieval in network database is summarized.
The general process of information retrieval in network database;
1, define the target of information retrieval, log on to the website and enter the retrieval interface.
2. Refine the input keywords and submit the retrieval requirements.
3. Search, browse the search results, and conduct secondary search when necessary.
This is in line with the students' thinking process, and students experience the joy of thinking and the joy of success in the process of exploration.
4. Cooperative exploration and experience of diversified network databases.
In the form of groups (6 students in each group), under the guidance of teachers, each group chooses one of the tasks according to their own interests, searches for information resources through relevant network databases, records or downloads the explored resources, and summarizes some characteristics of various network databases in combination with the contents provided by textbooks and practical experience.
Task:
(1) education resource library class:
China Teaching Resource Library/Find the e-books you need or are interested in and browse their basic information.
Because downloading requires a pass, students are only required to use it to experience the resources they need to find. )
(4) Entertainment appreciation:
Download your favorite songs on some music websites.
(5) Online Mall:
Ebay or Taobao browse the sources of some goods and experience the diversity of online goods sources.
(6) Digital city:
Students can check the bus route from the train station to the school in the city where the university is located according to the university they want to enter in the future, and submit at least one bus plan.
Teachers guide students to discuss the problems according to the students' operation problems found in the patrol, and evaluate the information retrieval process and the retrieved information of the three major network databases, namely, education resource database, online digital library and digital city, so as to further modify and improve the information retrieval process of the network database. At the same time, the characteristics of various databases are summarized.
The content of this link is the focus of teaching. By arranging tasks closely related to students' study and life, students' enthusiasm can be fully mobilized and their main role can be brought into play.
Provide some representative network database websites that can reflect the particularity of network database information acquisition, and guide students to explore their own network resources. Due to the limitation of time, each group of students is required to carry out cooperative inquiry learning for one of the tasks, and then summarize the learning achievements of each group, so as to achieve the effect of joint learning through cooperation and exchange.
5. Report results and exchange assessments.
Representatives of each group will report and exchange the actual results.
Communication and reporting requirements: show the information collected by our team to everyone, summarize the characteristics of various databases, and explain what problems we encountered during the experience and how to solve them.
After each group report, the teacher first affirmed the students' achievements in practical inquiry, praised the group that performed well in the process of cooperative inquiry, and guided other groups to evaluate from the following aspects:
(1) Task completed
(2) Timely, accurate and authoritative collection of resources.
In this link, teachers mainly play the role of moderator and organize evaluation activities.
In this session, students exchange and learn among groups through the results report, and summarize the practical results. At the same time, it also exercises students' expression and communication skills, and also promotes the feelings between classmates.
For the next class. Network database evaluation? Work hard.
Seven, after-school reflection
This class is mainly for students to experience in practice and pave the way for further use and evaluation of network database in the next class. Students have different foundations. In the process of grouping operation, some students may be unfamiliar with some retrieval operations, so teachers should do a good job of guidance to ensure that they can complete the task. Teachers should do a good job in organizing and guiding the report and evaluation of practical achievements.