Five teaching plans of information technology in senior high school

Teaching is a kind of creative labor. Writing an excellent teaching plan is a comprehensive embodiment of the designer's educational thought, wisdom, motivation, experience, personality and teaching artistry. I have compiled five high school information technology teaching plans, hoping to help you!

The use of search engines

Textbook version: Education Science Press, Information Technology Foundation.

Module: Compulsory, Chapter 2, Section 2, Use of Search Engine

Applicable grade: senior one

Internet is a rich treasure house of resources. In order for students to make full use of the Internet to serve themselves, they need teachers' active guidance and master the basic methods of information search in order to enjoy the beneficial information for life. To this end, I have carefully arranged the course "The Use of Search Engines", hoping that students can really learn the methods and skills of searching information.

First, the analysis of teaching content

The textbook used in this class is the standard experimental textbook of information technology for ordinary senior high schools, and the teaching content is the second section of Chapter II: the use of search engines in Internet information search. These contents occupy an important position in the whole book, and obtaining accurate and effective information is the basis of processing information. For students, participating in the Internet is another important way for them to learn knowledge.

Second, student analysis

Through the usual investigation and analysis, the overall level of our students is relatively low. There are 70 students in the class, and only a few of them can browse, search and download information on the Internet skillfully. A few of them often play games, and most of them can only do simple typing, word processing and drawing. In view of this, teachers must actively guide in the process of class, from simple to complex, and gradually deepen.

Third, the teaching objectives

1. Let students understand the meaning and classification of search engines.

2. Let students learn to use search engines to find information that meets their needs.

3. Let students arouse their enthusiasm, give play to the collective spirit and make progress.

Fourthly, the importance and difficulty of teaching.

Important: Full-text and directory search engines will be used to find information.

Difficulties: keyword selection and search skills.

Fifth, the choice of teaching strategies.

Because the objective conditions here are restricted by economic factors, the overall level of students is relatively low, and the actual level of freshmen in senior high school stays at the level of typing and playing cards. Therefore, in the design of teaching, the content involved is as little as possible, with simple tasks as the introduction, so that students can learn to find the information they need through the network. Moreover, because there are few opportunities to surf the Internet, and the information on the Internet is colorful, complicated and changeable, it is difficult for students to skillfully use it after one or two classes. The basic teaching methods should be taught first and then carefully. The arrangement of tasks should be hierarchical to prevent some students from being unable to find them, and some students from diverting their attention and focusing only on entertainment, news or games.

Sixth, the teaching process.

(A) the introduction of new courses

Hello, class. We must have heard of the explosive news of Shenzhou VI launch, or seen relevant pictures, texts and video materials. I asked my classmates, from what media did I learn this information?

Some students say there are TV, newspapers, radio and so on. Some students also said that through mobile phone text messages, the Internet.

T: Question: If you know this information through the Internet, please raise your hand.

Student: There are 70 people in a class, and only two or three students raise their hands.

T: Then let's take a look at how this class inquires about relevant information through the Internet. First of all, we should know that searching information on the Internet also has its own tools, that is, search engines.

(design concept)

Considering that students have few opportunities to surf the Internet, they may look for information and barely pass the exam technically. But they don't necessarily know the knowledge of search engines. It is necessary for students to master the classification of search engines and commonly used websites.

Screen broadcast:

Full-text search engines Baidu and Google

Directory index search engines Sina, Sohu, Yahoo

Meta-search engines InfoSpace, Dogpile, Vivisimo, Search Net.

Our class focuses on full-text search engines, taking Baidu as an example.

(b) Use of full-text search engines

Start IE, enter, Baidu. Com is a search engine that we want to learn. We take Shenzhou VI as the search target to see how to find relevant information. First, pay attention to Baidu's main interface. Com, very concise. Use a phrase to express the theme of the information you want to query, that is, the keyword, enter it into the corresponding search box, and then click the "Baidu Search" button. Let's look at the query results. How many related web pages have you searched? How many seconds did it take? You can see how fast it is. Select an appropriate one in the results page, click Open, and then browse the information. By browsing several simple web pages, guide students to pay attention to the information found, including relevant news reports, pictures and special information. What if we only want the relevant launch time, pictures or materials?

(design concept)

By searching for a representative information, students can intuitively understand how to find the information they need quickly. So that students have a strong interest in finding things, ask further questions, and let students understand that it takes brains and patience to find accurate and effective information.

Most students shake their heads.

Let me tell you a secret. If you want to find the launch time of Shenzhou VI, you should put a space between Shenzhou VI and launch time and search. You must pay attention to short and pithy keywords. Just give the students a brief demonstration.

Assign today's tasks:

Today's gold medal list of the 10th National Games

Clothing culture of ethnic minorities (taking a nation as an example, such as Tibetans)

(design concept)

The main purpose of asking students to find the gold medal list is to make them pay attention to the authenticity and timeliness of information. Don't just think that everything will be fine if they find it. At the same time, they should pay attention to our national affairs and inspire patriotic enthusiasm. Set the second task, one is to understand our rich national culture; Two are also part of the homework, because students generally have no extra time to surf the internet.

Students practice.

Teachers analyze common problems through patrol.

1. Address bar is missing.

Some students don't know where to enter the URL after opening IE. One possible reason is that the address bar and other toolbars overlap in one column and can be dragged down with the mouse. The other is that the address bar is hidden and can be started from the toolbar item under the view menu.

2. The "Start" button is missing.

Some students can't think of using enter key to realize network link.

3. Keyword input is very troublesome

The choice of keywords should represent the theme of the information you are looking for. Try to use phrases instead of one sentence. If the meaning is complex, please use spaces to separate keywords.

4. The information found is not accurate enough

Unsurprisingly, some students may have found information a few days ago, not today's gold medal list. Others didn't find a more detailed page describing clothing culture, just a picture or a paragraph, so they didn't find it.

S: Some students show their own web pages that meet the requirements, and the teacher gives them appropriate comments.

(design concept)

Teachers' timely analysis of problems is an opportunity to help students find and correct mistakes, and it is also a catalyst to improve students' search ability. Students show the better network information they have found, which is the supervision of other students. If others can do it, I can do it, and it is also an encouragement to the praised students. At least their learning situation is concerned by teachers and many students, so they will work harder.

(c) use a directory index search engine.

T: By studying the full-text search engine, we can see that it is an index database established by extracting information from various websites on the Internet. When users query, it retrieves qualified records in the database, mainly web pages. Directory index search engine, its working principle is to classify the information on the internet according to the directory and establish an index database for people to search by classification. Common search engines are Sina, Sohu, Yahoo and Netease. Let's take Sohu as an example to introduce how to find the relevant information of the 10th National Games.

Teacher demonstration:

Enter in IE address bar, open Sohu home page, find search engine, and let students pay attention to observe the new web interface. Find the general catalogue of sports and fitness (selected by students) from the classified catalogue, then find the subdirectories, and read it down step by step until you open the webpage about the 10th National Games.

Assign tasks to students:

1. Find excellent websites about folk customs/myths in social culture.

Please describe the meaning of "information superhighway"

3. The latest quotation of Tsinghua Tongfang Desktop.

4. Find an electronic dictionary with the price of Patriot brand around 900 yuan.

5. In which year did the State Council issue the Administrative Measures for the Security Protection of Computer Information Network International Networking?

6. Please explain the idiom story: "sit up and take notice" and "three chapters of the contract".

Participating stations:

Students practice freely and add the searched pages to favorites.

(design concept)

For the directory search engine, students have no fixed task, because this method is easy, but it is very troublesome to find; Providing multiple tasks for students to choose freely, the purpose is not limited to a search engine, so that students can explore tasks independently, find their own solutions to problems and exercise their self-study ability; At the same time, with more free time, students can find some information they are interested in, satisfy their curiosity, and also discuss and exchange experiences with each other; The purpose of searching the Internet is to let students know about search engines and expand their cognitive range.

T: Teachers patrol the classroom and actively guide them.

Ask the students some knowledge points they have learned in this class.

Teacher's summary:

We mainly studied the use of two search engines. In the process of learning, we should be good at summing up the differences between the two types of search engines and the skills of searching information, so as to find information better.

1. Full-text search engines look for a lot of relevant information, and it is difficult to find information that meets our needs at one time. You need to constantly change keywords and search repeatedly. The directory index is more accurate, but it needs everyone to take the trouble to find it step by step.

2. Don't separate the two search methods. Taken together, their functions are more and more comprehensive. For example, Google, Sina and Yahoo all have directory search and keyword search. When you can't find a search, in addition to changing keywords, you should try other search engine websites and be good at summarizing search skills. We will focus on learning next class.

In addition, in the process of learning, students can exert their collective strength and cooperate with each other, which is very good. If you have a good collection of web documents, try to send them to the designated folder on the teacher's computer and share them with everyone.

Seven, teaching reflection

1. The teaching objectives of this class are relatively clear, the teaching tasks are basically reasonable, and students at all levels have gained something.

2. In the process of teaching design, students should be actively encouraged to keep searching and find what they need, thus reflecting the advantages of the Internet and their own abilities and finding self-confidence.

3. In the arrangement of teaching tasks, we should reflect a certain level, so that students can do what they can and get more for more work.

4. Some commonly used websites about search engines should be transmitted to students' desktops or blackboards in advance, which is convenient for students to use.

Information retrieval is a basic skill that students should master. Has the teaching effect of this class been achieved? How to evaluate students' learning situation? In addition to the teacher's observation and guidance in class, as well as the demonstration of some students' tasks, the team leader should also supervise the implementation, because students can communicate with each other relatively easily, so as to ensure that the vast majority of students are proficient in application.

Graph of tabular data

Learning objectives:

Knowledge and skill goal: master the method of making charts; Know the range of the chart and analyze the data according to the chart.

Process and Method: Help students to establish the graphic relationship between data, discover the essence and changing law of things, and cultivate students' ability to process information.

Emotional attitude and values: cultivate students' practical ability, autonomous learning, cooperative inquiry and problem-solving ability.

Teaching focus:

Methods and steps of making charts with tabular data.

Teaching difficulties:

(1) Selection of chart type and data source;

(2) Chart data analysis.

Learning content:

1. Self-study content: complete the production of embedded charts of Taobao's double eleven provincial sales tables;

Data area: A 1: B36

Chart type: cluster column chart;

Data series are generated in: columns;

Chart title: sales of Taobao Double Eleven provinces;

Do not display legend.

1. Complete the production of the embedded chart in the seminar task 1:

Data area: a3: b10;

Chart type: cluster column chart;

Data series are generated in the following locations: columns;

Chart title: "Double Eleven" Taobao merchandise classified sales;

Classification (x) axis: project classification

Category (Y) Axis: Sales (Billions)

Do not display legend.

2. Make an embedded chart in Workshop Task 2:

Data area: A3, B9;

Chart type: pie chart;

Data series are generated in the following locations: columns;

Chart title: Taobao consumer age distribution map;

Do not display legend.

3. Make an embedded chart in Workshop Task 3:

Data area: a3: b12;

Chart type: line chart;

Data series are generated in the following locations: columns;

Chart title: "Double Eleven" Alipay transaction volume;

Do not display legend.

Second, expand the learning content:

1. Make an embedded chart in the worksheet 1:

Chart type: cluster column chart;

Chart title: comparison of annual average temperature in cities;

Data sources: A 1:A 13 and d1:d13;

The sequence is generated in the following locations: column;

Show legend.

2. Make an embedded chart in worksheet 2:

Data areas: A2: E2 and A5: E5;

Chart type: three-dimensional cluster column chart;

Data series are generated by rows;

Chart title: report card;

Do not display legend.

programming

Teaching objectives

1. Capability goal

The algorithm design idea of finding the sum of even numbers within 100 is expressed by flow chart.

2. Process and method

Use the example of doing something repeatedly in real life and the process of taking on the challenge of Go to sort out students' ideas, so that students can learn to extract the thinking method of cyclic evaluation from such real life, that is, the algorithm thought.

Cultivate students' ability to analyze and solve problems, let students learn to sort out clear ideas to solve problems when facing problems, and design limited steps to solve a problem, so as to understand how computers solve and deal with a problem.

3. Situation and values

Let students devote themselves to their studies, actively cooperate and communicate with other students, and explore ways to solve problems. Cultivate students' good thinking habits, improve their thinking ability and innovation ability, and develop good learning attitude and learning methods.

Create corresponding situations in the classroom to stimulate students' interest in learning. Strive to create a relaxed and interesting classroom learning environment, so that students can fly their wings of thinking in class and feel the joy of learning.

Teaching emphases and difficulties

Teaching emphasis: establish the algorithm design idea of finding even sum in 100, and express this algorithm design idea with flow chart.

Teaching difficulty: The above algorithm problem is also the teaching difficulty of this course. In addition, how to describe people's thinking and problem-solving steps in computer language is also one of the difficulties in this lesson.

Teaching object

Senior two students have mastered a certain computer foundation, and their ability to analyze and solve problems has gradually matured, and they have a certain understanding of sequence structure, branching structure and cyclic structure. Therefore, students have a certain foundation on how to turn problem-solving ideas into flowcharts, but they are not necessarily very skilled, so teachers should give further guidance in class.

Design of teaching strategies and teaching methods

Use the repeated events in real life to guide students to explore the method of finding the sum of even numbers within 100. When explaining the method of solving problems, I don't think it is appropriate to tell students the ready-made algorithm directly, but to let students go through the whole inquiry process themselves. In the process of completing this task, the teacher's inspiration and guidance played a very key role. On the surface, finding the sum of some numbers within 100 is just a simple mathematical problem. In the process of thinking, we can use the laws we have explored and the mathematical methods we usually study to get the answer smoothly. Computers are different from people, and the key to solving problems is to describe people's thinking process in computer language. This is a key point of computer programming teaching, which requires teachers to guide and train students step by step in the teaching process, so that students can gradually learn to analyze problems and get methods and steps to solve them. In this case, take the envisaged Go challenge as an example, guide students to analyze, and gradually deduce the algorithm design idea of finding the sum of even numbers within 100.

teaching process

First, the creation of situations

Teacher: There are more than 50 students present today. Suppose they all take part in the Weiqi competition today, and the person we are going to challenge is Chang Hao, a nine-stage master of Weiqi. If any student succeeds in the challenge, he will be famous all over the world and become a new generation of Go players.

Teacher (Instructor): Think about it. What is this process usually like?

The teacher analyzed the students' answers to the questions. Guide students to think about the model of challenge and remind them to list the process briefly.

Teachers and students: The process of Weiqi competition can be described as follows:

Determine the number of challenges;

Challenger to Chang Hao;

Once the challenge is successful, the challenger can become a new generation of Go players;

Repeat steps (2) and (3) until the last challenger.

Teacher: During the challenge, we see that steps (2) and (3) need to be repeated, so what should we do?

Health: The repeated part should be realized by a circular structure.

Teacher: When will this step be repeated?

Students discuss how to determine the number of cycles. Obviously, the known number of challengers is the condition for judging the end of the cycle.

According to the results of the discussion, the teachers and students finally came up with the algorithm and flow chart of Go Challenge (as shown in figure 1).

Inspire students with the example of Go Challenge, and find out the algorithm of even sum within 100.

Teacher: According to the characteristics of this problem, we can divide it into two situations.

An algorithm for the sum of all numbers in 100.

Teacher (Instructor): Now let's find the sum of all numbers within 100. What should we do?

Teachers and students analyze and compare the similarities and differences between the challenge schedule and this problem, and get the steps to solve this problem:

Set a variable sum with an initial value of 0;

Set a counting variable I to count from 1, which represents the number to be added;

I and sum are added and the sum is stored in the variable sum.

I. Accumulation

Output the value of sum when I is greater than 100, otherwise continue to execute ③ ④.

An Algorithm for Finding All Even Numbers in 100 Numbers

Teacher (Instructor): We can find the sum of numbers within 100, but we only need the sum of even numbers within 100, so how can we find qualified even numbers?

Health: Even numbers are natural numbers divisible by 2, and we can find numbers that meet this condition.

Steps to find even numbers discussed by teachers and students:

(1) Judge whether the number I divided by 2 is the remainder of 0.

(2) sum variable sum and number I are added to get a new sum.

③I accumulate and execute ① again.

The algorithm for finding even sum within 100 is obtained.

Teacher (Instructor): We have found an algorithm for adding numbers within 100, and even numbers have also been found. Can you find the sum of even numbers within 100? What should the specific algorithm be?

Health: Yes, just put the statement in (2) into the loop statement of (1) and execute it.

The algorithm finally discussed by teachers and students is as follows:

Problems needing attention in the teaching process:

Ask the students to discuss the definition and function of each variable. For example, sum and I are both counting variables and natural numbers used for evaluation.

Because the number of cycles is known, a cycle control variable I should be added to count, and when I accumulates to meet the conditions, it will exit the cycle.

summary

Looking back on the above cases, it seems an incomprehensible process to turn a problem into a computer language description algorithm. But the idea comes from life. With the help of the answers of common cases in life, we can clearly understand and draw the process of computer problem solving.

Animation production

learning target

1, master the classification of animation.

2. Learn the process and method of making 2D animation.

Learning focus

The process and method of making two-dimensional animation.

learning disorder

The setting of various parameters in the process of animation.

Preview and guidance

1. From the perspective of space, animation can be divided into two-dimensional animation and three-dimensional animation. If the animated picture

Two-dimensional animation, also known as picture synthesis two-dimensional animation, two-dimensional animation file formats are

If the animated picture is 3D animation, 3D animation is added.

There are also

The file format of 3D animation is.

2. There are many softwares for making 2D animation, and Macromedia is one of them. Animation uses technology, yes, it has its own characteristics.

Is widely used in.

3. There are two basic methods to make animation with Flash: one is, the other is.

Cooperative investigation

Firstly, the performance characteristics of two-dimensional animation and three-dimensional animation are discussed.

Second, the comparison of two animation production methods

1, frame by frame:

2. Automatic generation of intermediate frames:

Third, make mask animation.

A layer set as a mask in Flash can hide the contents of the next layer, and the contents of the next layer will be displayed by filling the mask layer with color shapes or text objects.

Demonstrate animation and analyze the production method.

5.2 animation (1) tutorial case

Fourth, the file format

1, fla format:

2.swf format:

Practical inquiry

Inquiry task: mask animation

Requirements: 1. Make mask animation according to classroom examples and save it in swf format.

2. Change the shape of the "background" layer and observe the effect of the mask animation.

Communication evaluation

Exchange production experience, what is worth improving.

Submit homework

Changing information technology

teaching process

Introduce a new course

Projection shows several examples of information technology to stimulate students' interest.

New curriculum teaching

First, the concept of information technology

Information technology mainly refers to related technologies that use electronic computers and modern communication means to obtain information, transmit information, store information, process information and display information.

Second, the development history of information technology

1. Five information technology revolutions:

Use of (1) language

There are more than 140 languages, with a population of over10 million, among which Chinese is the largest user, accounting for about one fifth of the world population. Therefore, Chinese is one of the six working languages designated by the United Nations, and the other five languages are English, Russian, German, French and Spanish. Some languages are spoken by only thousands or even hundreds of people, such as Native Indians in the United States, Oroqen and Hezhe in China.

(2) the creation of words

Characters are born on the basis of language and are the product of social development to a certain stage. The origin of human language was at least a million years ago, and the earliest human characters were born today, which is at most five or six thousand years.

With the development of Chinese characters, after China was unified by Qin Dynasty, Chinese characters were constantly simplified and sorted out, which made them gradually standardized. The development of Chinese characters can be roughly divided into four stages: ancient prose, seal script, official script and regular script. Among them, seal script is divided into big seal script and small seal script; Lishu is different from Qin Lishu and Lishu. It can be seen that any new font in the calendar is gradually formed through long-term evolution. Generally speaking, after the formation of regular script, China characters have been basically finalized.

(3) the invention of printing

China is the birthplace of printing, and printing in many countries in the world is developed under the direct or indirect influence of printing in China. The invention of printing has played an important role in the spread and development of human culture. Printing, papermaking, compass and gunpowder are called the four great inventions of ancient science and technology in China. Its invention, popularization and application have greatly promoted human civilization and social progress, so it is called "the mother of civilization".

(4) The invention and popularization of telegraph, telephone, radio and television.

Telegraph: 1844 On May 24th, in the packed Capitol, Morse manipulated the telegraph machine he had worked hard to develop for more than ten years with his trembling hands, and sent the first telegram in human history to Baltimore: "What a miracle God has created!"

After the Titanic hit an iceberg on 19 12, it sent a telegram "SOS, come on, we hit an iceberg." The passenger ship "California" a few miles away should have saved hundreds of lives, but the operator on this ship was not on duty, so he didn't receive the news. Since then, all ships have started all-weather radio signal monitoring.

Tel: 1892 new york Chicago telephone line is open. Bell, the inventor of the telephone, first auditioned: "Hello, Chicago", and this historic voice was recorded.

Television: After a long period of hard struggle and numerous failures, Baird finally put the image of people on the screen with electrical signals. 1929, the BBC allowed Baird to provide public television broadcasting services. After 1930s, Baird turned to the research of color TV and achieved some results.

5] The popularization and application of computer technology and modern communication technology.

First generation: 1946- 1956.

Second generation: 1957- 1963.

Third generation: 1964- 198 1 year.

Fourth generation: 1982- 1989

Third, the development trend of informatization

(1) More and more friendly man-machine interface.

⑵ More and more personalized functional design.

(3) Higher and higher cost performance.

Fourth, rational use of information technology.

Facing the development of information technology, we should understand objectively, foster strengths and avoid weaknesses, and give full play to the role of information technology.

Does the influence of surfing the Internet on middle school students outweigh the disadvantages, or does the disadvantages outweigh the advantages?

summary

1. Every information technology revolution promotes the development of human society to a higher level.

2. Information technology includes computer and network technology.

3. There are not only five revolutions in information technology. With the changes of the times and the development of productive forces, new things are constantly produced.

practise

1. What are the four stages of the development of Chinese characters?

2. What are the four stages of computer development?

3. How to make rational use of information technology to serve us?