Methodological development of a lesson in computer science "searching for information on the Internet." The stage of acquiring new knowledge. Schematic plan outline

Lesson topic: Searching for information on the Internet

Textbook: L. L. Bosova, A. Ya. Bosova “Informatics 9” Lesson type: lesson in discovering and acquiring new knowledge, skills and abilities

The purpose of the lesson: introduce students to the basic concepts of “search engine”, “link directory”, “search engine” and show practical use query language, teach how to find information on the Internet.

Lesson objectives:

• Educational: - introduce students to basic concepts, teach how to create queries for searching the Internet.
• Developmental: continue the development of attention and thinking; formation of general educational and general cultural skills in working with information, self-control and interest in the subject.
• Educational: continue to develop information culture, academic skills and a responsible attitude to the subject.

Equipment, resource support for the lesson

ICT tools used in the lesson:

• • teacher's personal computer, multimedia projector, screen;
  • Students’ personal computers with Internet access

Electronic educational resources

• • presentation
    Presentation for the lesson
    PPTX / 2.59 MB

Additional resources:

Handout with practical work “Searching on the Internet”
Practical work
DOCX / 16.89 KB
and lesson reflectionReflection
DOCX / 15.5 KB

1. Organizational stage

The teacher welcomes students, checks their readiness for the lesson, and promotes the formation of a positive emotional background. Students greet the teacher and take their jobs

The teacher checks the mastery of the material studied in previous lessons.

To do this, he uses a crossword puzzle with the basic concepts of computer networks (slide 2). Next tasks for establishing correspondence between logos popular browsers and their names (slide 3), and the names of the protocols and their purpose, respectively (slide 4).

3. Stage of acquiring new knowledge

Explanation of new material (slide 5 - 20)

Search system is a hardware and software complex that is designed to carry out the search function on the Internet, and responds to a user request, which is usually specified in the form of a text phrase (or more precisely a search query), by issuing a link list to information sources, carried out according to relevance.

Students name search engines they know.

Main characteristics of search engines

• • Completeness. Completeness is one of main characteristics search, it represents the ratio of the numbers found for the query information documents to their total number on the Internet related to this request. The more complete the search itself, the greater the likelihood that the user will find exactly the document he needs, of course, if it exists at all.
  • Accuracy. Accuracy determines the degree to which the pages found on the Internet match the user's request. The more accurate the search, the sooner the user will find the information he needs, the less various “garbage” will be found among the results, the fewer documents found will not correspond to the meaning of the request.
  • Relevance. Relevance characterizes the time that passes from the moment information is published on the Internet until it is entered into the search engine’s index database. For example, the day after information about the exit appears new iPad, many users turned to the search with relevant types of queries. In most cases, information about this news is already available in the search, although very little time has passed since its appearance. This is due to the large search engines having a “fast database”, which is updated several times a day.
  • Search speed. Such a function as search speed is closely related to the so-called “load resistance”. The search is accessed every second great amount people, such workload requires a significant reduction in the time to process one request. Here the interests of both the search engine and the user completely coincide: the visitor wants to get results as quickly as possible, and the search engine must process his request as quickly as possible, so as not to slow down the processing of subsequent requests.
  • Visibility. Visual presentation of results is the most important element of search convenience. For many queries, the search engine finds thousands, and in some cases millions different documents. Due to unclear drafting key phrases for search or its inaccuracy, even the very first query results do not always have only the necessary information. This means that a person often has to conduct their own search among the results provided. Various components of search results pages help you navigate search results.

Links directory- This is a list of links to sites broken down by topic with their brief descriptions.

Groups of links depending on the breadth of the topic

• • are common
  • specialized (thematic)

Link directory groups:

• • closed directories— adding sites to this directory can only be carried out by one responsible person.
  • white catalogs- DO NOT require backlink and PUT a direct link.
  • gray catalogs- REQUIRE a back link and PUT a direct link.
  • black catalogs— They REQUIRE a backlink and DO NOT provide a direct link.
  • directories of sites with direct links— when registering a site in this directory, the webmaster receives a direct (without redirection) link to his site.
  • directories of sites with links— registering a site in this directory does not provide a link to the registered site. Links in such directories are provided through redirection.

Search engine- This automatic system, which stores information about web pages known to it and provides, upon request, the addresses of those where the entered ones occur keywords.

Keywords is a set of words and expressions that reflect the required information.

The most basic task of every search engine is to deliver to people exactly the type of information that they need.

That is why specialist search engine developers create principles and algorithms for their work that would allow users to find the information they are interested in. This means that the system must “think” in the same way as a person thinks when searching necessary information in the Internet.

In order to get the correct answers to such questions, search developers are constantly improving the principles of ranking and its algorithms, adding new features and functions to them and trying by any means to make faster work systems.

First computer program for searching the Internet there was a program called Archie (English archie - archive without the letter “v”). It was created in 1990 by Alan Emtage, Bill Heelan and J. Peter Deutsch, computer science students at McGill University in Montreal. The program downloaded lists of all files from all available anonymous FTP servers and built a database that could be searched by file names. However, Archie's program did not index the contents of these files, since the amount of data was so small that everything could be easily found by hand.

The first web crawler written in Perl was " World Wide Web Wanderer" - a bot by Matthew Gray at MIT in June 1993. This robot created search index Wandex. Wanderer's goal was to measure the size of the World Wide Web and find all web pages containing the words from the query.

The WebCrawler search engine, launched in 1994, is the first full-text resource indexing system using a robot (“craweler-based”).

The system allowed users to search for any words located on any web page - this has since become the standard for most search engines.

The WebCrawler search engine was the first search engine to become widely used.

In 1996, a search was implemented taking into account Russian morphology on the Altavista search engine and the original Russian search engines Rambler and Aport were launched. On September 23, 1997, the Yandex search engine was opened. On May 22, 2014, Rostelecom launched the national search engine Sputnik. Opened on April 22, 2015 new service Satellite. Children especially for children with increased security.

Types of search engines:

• • Systems using search robots. Consist of three parts: crawler ("bot", "robot" or "spider"), index and search engine software. A crawler is needed to crawl the web and create lists of web pages. Index - large archive copies of web pages. Target software— evaluate search results. Due to the fact that the search robot in this mechanism constantly explores the network, the information is more relevant. Most modern search engines are of this type.
  • Human-powered systems (resource directories): These search engines retrieve lists of web pages. The directory contains the address, title and short description site. The resource directory only looks for results from page descriptions submitted to it by webmasters. The advantage of catalogs is that all resources are checked manually, therefore, the quality of the content will be better compared to the results obtained automatically by the first type of system. But there is also a drawback - updating directory data is done manually and can significantly lag behind real situation business
  • Hybrid systems. Search engines such as Yahoo, Google, MSN combine the functions of systems that use search robots, and human-controlled systems.
  • Meta-systems. Metasearch engines combine and rank the results of several search engines at once. These search engines were useful when each search engine had a unique index and search engines were less "smart". Since search has improved so much now, the need for them has decreased.

Many search engines, such as Google and Bing, use algorithms to selectively guess what information a user would like to see based on their past browsing activity. As a result, websites only show information that is consistent with the user's past interests. This effect is called the “filter bubble.” All this leads to the fact that users receive much less information that contradicts their point of view and become intellectually isolated in their own “information bubble”.

The teacher conducts a survey to find out the most popular search engine in the class and introduces students to the ranking of search engines in Russia.

Query language

Prohibition of enumerating all word forms.

Mandatory presence of words in the found documents.

Excluding a word from search results.

& - obligatory occurrence of words in one sentence.

~ - the requirement for the presence of the first word in a sentence without the presence of the second.

| - search for any of these words.

"" - search for stable phrases.

$title - search for information by title names.

$anchor - search for information by link names.

4. Dynamic pause

(slide 21-23) Students are given a dynamic break, which consists of three groups of gymnastics exercises for the eyes, relieving tension and fatigue according to the method of E. S. Avetisov.

5. The stage of consolidating the studied material followed by self-test.

(slide 24-25) The teacher conducts practical work with students on searching the Internet.

Practical work.

Exercise 1.

Features of searching by group of words.

Fill out the table using the Yandex search engine.

Task 2.

Find information about interesting facts Volgograd on the Internet

1. What is unique about Coventry Street in Volgograd?

2. Where is the tallest monument in the world located? to a real person? Please indicate its dimensions and photo.

3. What size is the longest house in Europe? Indicate his address and photo

4. When Volgograd is renamed the “hero city of Stalingrad” ( exact dates)

5. What is the length of the longest street in Russia, which does not have official street status? What name does it have?

After completing the work, the results of the work are checked, and students give themselves a grade for the lesson.

The teacher monitors the progress of students’ work and helps students who are unable to complete the task on their own.

Students, under the guidance of a teacher, check the results of practical work, analyze the answers received, and decide on an assessment of the results of the work.

Sample answers to practical work (slide 26-31)

Assessment of practical work

5 - answers to task 1 were given correctly, task 2 was completed in full with explanations and photographs.

4 - in task 1 there were inaccuracies in 1-2 answers, one or two of the questions in task 2 were given an incomplete answer.

3 - in task 1 there were inaccuracies in 3-4 answers, three questions of task 2 were given incomplete answers or there were no answers to 2 questions

6. Summing up the lesson, reflecting on the lesson, setting homework

The teacher assigns homework and comments on it if necessary.

Homework

Learn lecture material

Textbook by L. L. Bosov, A. Ya. Bosov “Informatics 9”

Workbook L. L. Bosova, A. Ya. Bosova “Informatics 9”

The teacher and students summarize the lesson, give grades and thanks for the lesson, and invite students to fill out a lesson reflection sheet.

Answer selectively 2-3 of the following questions:

• • today I found out
  • I managed
  • I'm having difficulties
  • I completed tasks
  • I learned
  • Now I can

Resources used:

L. L. Bosova, A. Ya. Bosova “Informatics 9”

I.G. Semakin, L.A. Zalogova, S.V. Rusakov, L.V. Shestakova “Informatics and ICT 9”

Lesson objectives:

• Educational– to develop the skills of searching for information on the Internet, to systematize knowledge when working on the Internet, to stimulate students’ interest in this topic and academic subjects generally.
• Developmental– development of skills to evaluate the results of completed actions, skills to apply acquired knowledge in problem solving, speech development.
• Educational– education of aesthetic sense, sense of harmony, independence, responsibility, information culture, broadening your horizons.

Lesson type: lesson generalization and systematization of knowledge, skills, combined.

Lesson type: workshop lesson with elements of research activities.

Teaching method: a joint project.

Form of study: collective, individual.

Teaching methods: instructive, practical, research.

Technology: interactive learning.

Lesson structure: updating basic knowledge, developing skills, presentation of tasks, consolidation of acquired skills.

Equipment: computer, projector, operating room Windows system, MS Office package, Word word processor, lesson notes, files with assignments.

During the classes

I. Organizing time(2 minutes).

II. Updating basic knowledge (5 min).

The Internet is growing at a very fast pace, so find necessary information among hundreds of billions of Web pages and hundreds of millions of files, it becomes increasingly complex. To search for information, special search engines are used, which contain constantly updated information about the location of Web pages and files on hundreds of millions of Internet servers.

Search engines contain thematically grouped information about information resources World Wide Web in databases. Special robot programs periodically “bypass” Internet Web servers, read all the documents they encounter, highlight keywords in them and enter the Internet addresses of documents into a database.

Most search engines allow the author of a Web site to enter information into the database by filling out registration form. In the process of filling out the questionnaire, the site developer enters the site address, its name, a brief description of the site’s content, as well as keywords that will make it easier to find the site.

Search by keywords. Searching for a document in the search engine database is carried out by entering queries into the search field.

The query must contain one or more keywords that are central to this document. For example, to search for Internet search engines themselves, you can enter the keywords " Russian system Internet information search

Search in hierarchical system catalogues. In the search engine database Web systems-sites are grouped into hierarchical thematic catalogs, which are analogous to the thematic catalog in the library.

Search files. To search for files on file archive servers, there are specialized search engines, including the FileSearch search engine (www.filesearch.ru). To search for a file, you must enter the file name in the search field, and the search engine will return the Internet addresses of the file archive servers on which the file with the specified name is stored.

Search by images

As requests to Google Search You can use images.

When using this function you can get the following results:

• similar pictures;
• sites on which this image is posted;
• This is the same image in other sizes.

Searching by image works best if it is popular on the Internet. For example, you'll find many more results for landmarks and art than for family photos.

Search on your computer.

III. Screening test. Searching for information on the Internet (5 min) (Annex 1)

IV. Doing practical work (task 1) (20 min).

Students are divided into 3 groups. Each group receives its own task supporting notes(Appendix 2), and students complete it on a computer using the Internet. (The “Text with gaps” technique, find the missing information on the Internet to get a coherent text). (Appendix 2)

Find answers to queries using pictures:

A) what is this?

B) find an embroidery pattern for this pillow.

C) Find the logos of the 355th anniversary of the city of Irkutsk, the 80th anniversary of the Irkutsk region.

VI. Summing up (3 min).

Lesson summary in computer science on the topic

"Tools for searching information on the Internet."

Lesson topic: “Tools for searching information on the Internet.”

Target:

Familiarity with the techniques of searching for information on the Internet through search engines.

Tasks:

Educational – study search engines and master technologies for searching information on the global network;

Developmental – development in schoolchildren of logical thinking, attentiveness, creative approach to the point.develop the ability to analyze and generalize, draw conclusions, broaden your horizons;

IN educational – instilling in students responsibility for business, interest in computer science, a conscientious attitude to work, collectivism and mutual assistance.

Health-saving: compliance with sanitary standards when working with a computer, compliance with safety regulations, the optimal combination of forms and methods used in the lesson;

Lesson type:

learning new material.

Forms of training:

Frontal, individual, group.

Teaching methods:

Verbal, visual, practical, problem-based, partially search-based.

Equipment:

A computer with Internet access, a multimedia projector, an office equipped personal computers with Internet access at the rate of 1 student - 1 computer.

Presentation for the lesson

Task cards

Brief lesson plan:

Organizational moment – ​​2 min.

Problem situation ( brainstorm) -3 min

Internet search techniques – 18 min.

Physical education minute - 2 min.

Work on searching for information on the Internet – 15 min.

Summing up the lesson – 5 min.

During the classes

Organizing time.

One wise man gave advice:

"It is useful to observe

Accumulate all impressions, -

And you will know a lot."

—What advice did the sage give?

— Today in the lesson we will follow the advice of the sage, working on the topic of the lesson: “Search engines, information search”

A few years ago, a teenager's first priority was

go outside, chat with friends. As it was familiar, somewhere under

evening to hear: “Petya! You will go out?!" The average student

returning home after the school day, had dinner, did homework

task... Now another one is being added to this simple list

paragraph:

The end of the world - no internet

I can't do this and I can't do that

Zero information – infodiet

And no answer and no hello...

The end of the world - no internet...

I am here somewhere, and you are somewhere, somewhere...

Wait for an answer, wait for an answer.....

The end of the world - no Internet!..

turns on the computer to view sites from the category

2.Problem situation (brainstorming)

Appearance of a problem

The World Wide Web attracts millions of people every year

new users. The average modern person

I can hardly imagine my existence without the Internet. However

Not everyone can accurately answer the question of what the Internet is -

after all, for each of us he plays his own role.

When most of us say the word “Internet” today, we do not

thinks about the technical side of things - much more interesting

This is what the Internet can give to people. What's happened

Internet in human consciousness today?

let's try to highlight the strong and weak sides Internet

Now you will be divided into 2 teams. The first group are supporters of the Internet, and the second group are opponents.

Within three minutes, you need to highlight the main advantages (for group 1) and disadvantages (for group 2) of the Internet.

I offer you the followingthe advantages and disadvantages of the Internet that I have highlighted.

Advantages

Conclusion (students on their own first): We were able to take a look at the global computer Internet network from different sides. Both its positive and negative qualities have been identified. Summarizing all of the above, we can conclude that the Internet is a very important source of information, which, of course, should be used, but we should not forget about the problems that a computer network brings with it.

Today we have a lesson in which you will learn how to search for information on the Internet, learn about search engines that make it easier to find the information you need.

3. Study a new topic

Now we'll talk about searching for information on the Internet.(Appendix 1 slide 4).

Very often there is a need to search for the required information on various topics. To do this, you can use the necessary literature. But the most effective and quick method is searching for information on the Internet. But having a computer and Internet access does not guarantee that a person will be able to find the necessary information quickly and completely.

There are three ways to search for information on the Internet(Appendix 1, slide 5-7 ):

Specifying the page address.

Contacting a search engine (search server).

Let's look at each of them:

– (Appendix 1, slide 5): Specifying the page address is the most quick way search, but it can only be used if the exact address of the document or the site where the document is located is known.

– (Appendix 1, slide 6) : Navigating links – This is the least convenient way, since with its help you can search for documents that are only close in meaning to the current document.

But this method is very simple and suitable for a novice user.

– (Appendix 1, slide 7 Using hypertext links, you can travel endlessly to information space Network, moving from one web page to another, but if you consider that many millions of web pages have been created in the world, then it is unlikely that you will be able to find the necessary information on them in this way.

This is where special search engines come to the rescue (they are also called search engines). Search server addresses are well known to everyone who works on the Internet. Currently, the following search servers are popular in the Russian-language part of the Internet: Yandex (yandex.ru), Google (google.ru), Rambler (rambler.ru) and some others.

(Appendix 1, slide 8-9): What is a search engine?

Search engine is a website that provides the ability to search for information on the Internet.

Most search engines look for information on World Wide Web sites.

According to the principle of operation, search engines are divided into two types: search directories and search indexes.

(Appendix 1, slide 10): Search directories serve for thematic search.

The information on these servers is structured by topics and subtopics. If you intend to cover a specific topic, it is not difficult to find a list of web pages dedicated to it.

(Appendix 1, slide 10): Guys, pay attention to the next slide. This is what it looks like home page Yandex catalogue. Here you can select a section according to your interests.

Now let's talk about search indexes.(Appendix 1, slide 10): Search indexes work like alphabetical indexes. The user specifies a word or group of words that characterizes his search area and receives a list of links to web pages containing the specified terms.

(Appendix 1, slide 10): Pay attention to this slide. Here we see information on the request “Computer in human activity”. 13 million pages found. To achieve a specific result, the query must be made more precise.

The first search engine for the World Wide Web was Wandex, a now-defunct index developed by Matthew Gray of the Massachusetts Institute of Technology in 1993.

(Appendix 1, slide 12-13): Now we will get acquainted with the most popular search engines on the Russian-language Internet.

(Appendix 1, slide 14) Here is information about Yandex - one of the most popular search engines. Yandex is a Russian Internet search system. The company's website, Yandex.ru, was opened on September 23, 1997. The company's head office is located in Moscow. The company has offices in St. Petersburg, Yekaterinburg, Odessa and Kyiv. The number of employees exceeds 700 people.

The word “Yandex” (consisting of the letter “Ya” and part of the word index; a play on the fact that the Russian pronoun “Ya” corresponds to the English “I”) was invented by Ilya Segalovich, one of the founders of Yandex, in currently incumbent technical director companies.

Yandex Search allows you to search the RuNet for documents in Russian, Ukrainian, Belarusian, Romanian, English, German and French, taking into account the morphology of Russian and English languages and proximity of words in a sentence. Distinctive feature Yandex - opportunity fine tuning search query. This is achieved through a flexible query language.

By default, Yandex displays 10 links on each results page; in the search results settings, you can increase the page size to 20, 30 or 50 found documents.

(Appendix 1, slide 15): Leader search engines Internet, Google occupies more than 70% of the global market. Currently about 50 million are registered daily search queries and indexes more than 8 billion web pages. Google can find information in 115 languages.

According to one version, Google is a distorted spelling of the English word googol. "Googol" is a mathematical term for one followed by 100 zeros. The term was coined by Milton Sirotta, nephew of the American mathematician Edward Kasner, and was first described in the book Mathematics and the Imagination by Kasner and James Newman. Use of this term by Google reflects the challenge of organizing vast amounts of information on the Internet.

Google's interface contains a rather complex query language that allows you to limit the scope of your search separate domains, languages, file types, etc.

(Appendix 1, slide 16): Rambler Media Group is an Internet holding company that includes a search engine and resource rating classifier as services Russian Internet, informational portal. Rambler was created in 1996.

The Rambler search engine understands and distinguishes between words in Russian, English and Ukrainian languages. By default, the search is carried out using all forms of the word.

Physical education minute

5. Practical work.

I suggest you continue with the task where you have to use search engines to find the information required in the table(Appendix 2).

6. Summing up.

World Day safe internet celebrated on February 7 at the initiative of the European Commission, which was supported by European non-profit organizations in January 2004. Every day, children and adults use the Internet, which serves as a work tool for us, a means of communication and an opportunity to have fun, so it is so important to remember about security, which lies in the safety of the personal data of each of us. Let the Internet be safe not just for one day, but every day of the year, so that we can be confident in our protection from malware and other threats to privacy!

And remember, the Internet can be a wonderful and useful tool for learning, relaxing, or communicating with friends. But - just like real world– The network can also be dangerous! Learn not to “spend time” on the Internet, but to actively use useful features networks.

Homework.

Is the Internet an evil or a gift of progress to humanity? We are unlikely

Can you give at least some definitive answer? Like anyone

another aspect of human existence, and this sphere is a medal with two

parties

1. “Writing an essay”

"Internet. Friend or foe?

The answer to this difficult question can be endless. AND

argue until you're hoarse about who's right. Of course, for me the Internet is still

Friend. He acts like a friend. If I don't understand something, he always

will explain. If I have a question, he will answer, and almost never

thinking. I want to go to the cinema, the theater - please, it’s here

here. Order tickets, choose a cinema or film.

At the end of the lesson, the teacher sums it up and evaluates the students’ work. In summing up, we should focus on the fact that different search engines, when finding the same information, give different results.

Lesson objectives:

1. Educational:

• introduce concepts: search server, search directory, search index, metasearch engines, file archives;
• develop skills in searching for information using search servers.

2. Developmental:

• contribute to the development of students’ horizons and logical thinking;
• developing cooperation skills.

3. Educational: to promote culture, a sense of pride in the achievements of humanity.

Lesson type: lesson of new knowledge, skills and abilities.

Method: explanatory and illustrative.

Lesson equipment:

1. PC-13, multimedia projector, screen.
2. Files in the folder “Tasks for open lesson"(published on the Internet):
   • Poetic coloring - Appendix 1;
   • Crossroads 2.1 – Appendix 2;
   • Crossroads 2.2 – Appendix 3;
   • Crossroads 2.3 – Appendix 4;
   • Crossroads 2.4 – Appendix 5;
   • Crossroads 2.5 – Appendix 6;
   • Who is who – Appendix 7;
   • Chronoscope – Appendix 8;
   • What happened before - Appendix 9;
   • Let's play hopscotch - Appendix 10;
   • Linguistic Geography – Appendix 11;
   • Guess how many - Appendix 12;
   • Practical work “Working with search engines» – Appendix 13;
   • Handout “Advanced Search Operators” – Appendix 14;
   • Presentation “Searching for information on the Internet” – Appendix 15.

During the classes

1. Organizational part.

1. Verification of compliance with uniform pedagogical requirements.
2. Checking the class roster.
3. Getting students in the mood for work.
4. Announcing the topic and purpose of the lesson.

2. Repetition of previously studied material.

Method: frontally orally.

1. List Internet services and their purposes.
2. Highlight the advantages and disadvantages of email.
3. Is it possible to send a letter to several recipients at once?
4. Is it possible to find out whether a letter is opened by the addressee or not?
5. If you divide Internet services into 2 groups: communication and information, then which group would you include? email?
6. Is it necessary to indicate the subject of the letter?
7. What type of file can be attached to a letter?
8. How many files can be attached to a letter (mail.ru)?
9. When replying to a received letter: a) you don’t have to write your address; b) the address must always be written in the From column; c) the address must be written at the end of the letter; It is not necessary to write a topic.
10. How is the mailbox name formed?

3. Formation of new knowledge, skills and abilities.

Method: lecture according to plan.

The presentation “Searching for information on the Internet” (Appendix 15) is used.

1. Search servers (Slide 2).
2. Search catalogs: features, advantages and disadvantages, examples (Slides 3-9).
3. Search indexes: features, advantages and disadvantages, examples (Slides 10-19).
4. Advanced search operators, example (handout).

4. Practical work on a PC.

First of all, it is necessary to publish applications 1-12 on the Internet. To do this, you need to create your own Google account – Appendix 16. The basic techniques for creating and publishing a document are discussed in Appendix 17 (pay attention to the Note section). It is also necessary to provide access to files with assignments to all students according to their email address(tab Sharing- team Granting access to other users– indicate the email addresses of all students).

Students perform practical work “Working with search engines” – Appendix 13, using the handout “Advanced search operators” – Appendix 14.

8 tasks are offered for students. In each task, the student completes only a certain part (this is regulated in Appendix 13). Task No. 2 “Crossroads” is very indicative. Students need to work together to answer the proposed question. They are offered a table. The essence of the work is to compare the words of the first column with the words of the first row. Having found a match, the student selects the letter located at the intersection required lines and column. Two or three students work on one table, looking for their 2-4 matches out of 10-12 proposed. If the matches are found correctly, then you can read the word, which is the answer to the question posed earlier. Thus, the efforts of everyone involved are invested in completing the task.

After completing tasks, a review of the work performed is done.

5. Lesson summary.

1. Summarizing the material studied.
2. Homework: § 5.5 and § 5.6 (for self-study).

Literature:

1. Ugrinovich N.D. Computer Science and ICT. Basic course: Textbook for grade 9 / N. D. Ugrinovich. – 5th ed. – M.: BINOM. Laboratory of Knowledge, 2007. – 320 pp.: ill.
2. Derkach O.B., Bykov V.V. 1000 tasks to charge your brain. – M: AST-PRESS SKD. – 2005. - 304 p. – (1000 tips from the Komsomolskaya Pravda newspaper).
3. Leontyev V.P. Internet. – M.: OLMA-PRESS. – 2006. – 768 p.: ill. – (Encyclopedic reference books).