What is multimedia. What is a multimedia presentation, types and stages of work What is a multimedia presentation definition

Introduction

multimedia presentation lesson educational

Modern education cannot be imagined without multimedia technologies, which includes a set of computer technologies that simultaneously use several information media: graphics, text, video, photography, animation, sound effects, high-quality sound, that is, in all forms known today. Educational institutions are provided with modern computers, electronic resources, and Internet access. This contributes to the introduction of new pedagogical technologies in the educational process. Multimedia lessons, therefore, most optimally and effectively correspond to the triune didactic goal of the lesson:

Educational aspect: students' perception of educational material, comprehension of connections and relationships in the objects of study.

Developmental aspect: development of cognitive interest among students, the ability to generalize, analyze, compare, enhance the creative activity of students.

Educational aspect: education of a scientific worldview, the ability to clearly organize independent and group work, fostering a sense of camaraderie, mutual assistance.

Modern science does not stand still. Often, new knowledge, and even more so new technologized generations, require new forms of presentation and processing of educational material. One of such forms in education can be multimedia presentations. Computer presentations, most often created using Microsoft PowerPoint, are already firmly established in the teaching of various academic subjects.

However, presentations are not only a teacher's tool, but also a way of self-expression that is available to every student. The use of new opportunities in the teacher's work implies student-centered learning, combining different pedagogical technologies - learning in collaboration, multi-level learning, problem-based learning, research method, project activities, which are based on the development of students' cognitive skills, the ability to independently design their knowledge, navigate in the information space, the development of their critical and creative thinking, the ability to see, formulate and solve a problem.

The concept of "Multimedia presentation"

So, in the educational process of Russian schools, multimedia teaching tools (a set of visual, audio and other means of displaying information, integrated in an interactive software environment) are increasingly being introduced, among which multimedia presentations take an important place. What does the concept of "presentation" mean?

Multimedia presentations is a way of presenting information using computer programs that combines dynamics, sound and image, i.e. those factors that hold attention the longest. A presentation is a set of successively replacing pages - slides, on each of which you can place any - text, pictures, diagrams, video - audio fragments, animation, 3D - graphics, using various design elements.

This multimedia form makes it possible to present the material as a system of vivid reference images filled with comprehensive structured information in an algorithmic order. The purpose of this presentation of educational information, first of all, in the formation of a system of figurative thinking in schoolchildren.

Multimedia presentations are used so that the speaker (student or teacher) can visually demonstrate additional materials to his message on a large screen or monitor: video recording of physical and chemical experiments, photographs of field surveys, drawings of buildings and structures, calendar charts of temperature measurements, chronology of events, supported by major dates. These materials can also be supplemented with appropriate sound recordings.

Every teacher knows how information is memorized: if information is perceived only by hearing, 20% of its volume is assimilated; if only with the help of sight, 30% of the material is remembered. With a combined combination of "switching on" the auditory and visual channels of information, the student is able to assimilate up to 60% of the information. And the use of multimedia allows you to combine text, sound, graphics, video, and also animation (animation) loved by children. Thus, the use of multimedia significantly contributes to the assimilation of educational information by each student.

The systematic use of a computer, in particular multimedia presentations, in the lesson contributes to:

Improving the quality level of using visibility in the lesson

· Increase in lesson productivity

· Implementation of intersubject connections;

· Logization and structuring of educational material, which significantly increases the level of knowledge of students;

· Changes in the attitude of schoolchildren to the computer: they begin to perceive it not as a modern toy, but as a universal tool for effective work in any area of \u200b\u200bhuman activity.

The use of presentations in the educational process provides an opportunity to:

· To give students more complete, reliable information about the studied phenomena and processes;

· Satisfy the needs, desires and interests of students;

· Saves study time rather than working at the blackboard.

Many didactic and educational tasks are effectively solved with the help of presentations. Special:

· When studying new material, presenting new information;

· When consolidating the passed, working out educational skills;

· With repetition, practical application of the acquired knowledge, skills;

· When generalizing, systematizing knowledge.

MULTIMEDIA

The concept of multimedia data.

Audio and video file formats. Multimedia players

What is multimedia

• Multimedia Is a software product containing images, text and data, accompanied by sound, video, animation and other visual effects, as well as equipped with an interactive interface with controls

Components of a multimedia product

• text
• audio
• video
• animation
• images
• interactive elements

Codec concept

• Codec - a program that converts the data stream or signals for their further use.

• Codecs can both encode and decode multimedia data.

• Multimedia data is transmitted using video and audio streaming technology, which transmits video data in real time as independent blocks in a continuous stream.

Sound saving formats

• mp3 – provides a high degree of data compression and makes it possible to create small files
• wma - licensed format Microsoft , supports digital copyright management system format

Formats for saving video images

• mpeg - video files with extensions mpg, mpeg, mp4 (provide compression of video information while maintaining high image quality)
• wmf - video files with extensions wmf, asf for Universal Windows Player

Media containers - a format that makes it possible to place multimedia data of different types in one file

• wav - designed to save uncompressed sound, high quality sound, large volume, used in digital voice recorders
• avi - combines uncompressed or encoded with different codecs audio and video files, one file no more than 4 GB
• mov - connects video streams encoded in different ways

Formats Flash

swf - contains computer graphics, animation, interactive elements

Multimedia formats

streaming media containers Flash clips

audio Video- avi swf

formats formats wav

mp3 mpeg mov

wma wmf flv

• Real Player - displays sound and video of most streaming formats, records audio files to CD in analog form

www.real.com

• QuickTimePlayer - standard player for PC with Mac OS X

www.apple.com / quicktime /

• WinAmp - universal player for multimedia files

www.winamp. com / player

• Media Player Classic - a free player displaying a wide range of audio and video files

• Windows Media Player - included in Windows OS, displays audio and video files of most formats

• MediaPlayer VLC Is a free, open source, multimedia player that plays most multimedia files as well as DVD, Audio CD, VCD and various streaming protocols.

• KMPlayer - supports many audio / video formats and does not require installation of codecs.

Video conversion software

AVC (Any Video Converter)

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Modern multimedia software has great capabilities in displaying information that are significantly different from the usual ones, and have a direct impact on the motivation of students, the speed of perception of the material, fatigue and, thus, on the effectiveness of the educational process as a whole.

One of the types of multimedia products that are most widely used in the educational process is a computer presentation.

A computer presentation, created in the PowerPoint software environment, is a sequence of slides containing multimedia objects (music, animation and video clips). The transition between slides is carried out using control objects (buttons) or hyperlinks.

The undoubted advantage of computer presentation in the modern educational process are:

visibility for listeners;

thesis for the speaker.

The main unit of electronic presentation in the PowerPoint environment is a slide or frame for presenting educational information, taking into account the ergonomic requirements of visual perception of information.

The following types of presentations are distinguished:

static: the user (student or student) studies the information material posted on the presentation slides, but does not have the ability to change the content of the slides (write down or mark the correct answer on the slide); the sequence of viewing slides is designed by the developer of the presentation in the form of a rigid navigation scheme and cannot be changed in the process;

interactive: the user, in addition to studying information materials, can change the content of the slides; the navigation scheme of the interactive presentation is dynamic, the sequence of transitions between slides is determined by the user's actions in the process of educational tasks placed on the slides.

When preparing multimedia presentations for educational purposes, it is necessary to consider:

general didactic principles of creating educational programs;

requirements dictated by the psychological characteristics of the perception of information from the screen;

ergonomic requirements.

When creating a multimedia presentation, you should be guided by the following principles:

the presentation should not be superfluous: each slide should represent the necessary link in the story and work for the general idea of \u200b\u200bthe electronic product;

the presentation should be short, accessible and compositionally holistic;

the duration of the presentation with the script should be no more than 20-30 minutes;

the presentation should complement, illustrate what is discussed in the lesson, and not duplicate the lesson material;

Flexibility is one of the keys to a successful presentation. You must be prepared to make changes during the presentation in response to student reactions.

The presentation can have two versions:

for the student;

for the teacher.

The electronic presentation is constantly updated with new materials and improved. For the student, his presentation is supplemented by personal works. Modern software and hardware tools make it easy to change the content of the presentation and store large amounts of information.

The development of a presentation can take place in several stages.

Stages of multimedia presentation development.

What is multimedia Multimedia is an interactive (dialogue) system that provides simultaneous work with sound, animated computer graphics, video frames, static images and texts. A relatively young industry of new information technologies. Multimedia - "many environments" (multi - many, media - environment) Simultaneous impact on the user through several information channels. Game software - multimedia products

Computer training programs -What student communication channels are used? Advantages 1. Helps to better understand and memorize educational material. 2.Interactive mode allows the student himself to influence the pace of learning, check the degree of mastering the material, Return to the repetition of incomprehensible fragments of the lesson Electronic reference books Dictionaries Encyclopedias Art and music albums

Interactive presentation Dialogue between user and computer. The user controls the presentation. In this mode, the student works with the training program. Individual work does not require a multimedia projector. Property: Event driven.

Scripted presentation Slide show led by a presenter (presenter). May contain: titles running across the screen, animated text, diagrams, graphs and other illustrations. The order of changing slides is determined by the presenter. He also develops the presentation. Used in the educational and extracurricular work of schoolchildren.

Presentation development program Each of the existing programs of this class has its own individual capabilities. General: 1. Built-in animation creation tools. 2. Means of adding and editing sound. 3. Means of importing images, videos. 4. Means of creating pictures.

Various public appearances often require the use of demonstration material. Such a need arises when reading a report at a scientific conference, presenting a new technical development or a new type of product, a report on a developed project, and in many other cases. In former times, for this purpose, posters were drawn on sheets of Whatman paper; then projection equipment appeared: epidiascopes, slide projectors, overhead projectors.

Recently, these demonstration methods have been replaced by multimedia presentations. The word "presentation" means a presentation, a demonstration. Typically, a computer presentation uses a multimedia projector that reflects the contents of the computer screen on a large screen displayed in the classroom. A multimedia presentation is a multimedia product that can include text and text special effects, speech and music, animations, video clips, picture and slide galleries (slide shows), etc. The more effective the presentation is, the more it uses the capabilities of multimedia technologies.

Multimedia presentations can be delivered by a person on stage, shown through a projector, or on another local playback device. The presentation can be broadcasted live or pre-recorded. Broadcasting or recording can be based on analog or electronic technologies for storing and transmitting information. It is worth noting that online multimedia can either be downloaded to the user's computer and played in any way, or played directly from the Internet using streaming technologies. Media streaming technologies can be live or on-demand.

A presentation is a sequence of slides. A separate slide can contain text, pictures; photography, animation, video and sound.

When creating presentations, as a rule, hyperlinks are organized between slides. Thanks to this, not only an unambiguous sequence of viewing the slides becomes possible, but also arbitrary viewing according to semantic connections. ”For example, a presentation can start with a slide containing general information about the presented material and a list of its main sections. Each item on the list is a hyperlink. By clicking on the hyperlink, the presenter can jump to any section of the presentation.

If the technology of hypertext is applied to non-text elements of the presentation, then we get a class of systems called hypermedia. The presentation is a hypermedia system, since hyperlinks can be superimposed on graphic and sound objects. For example, after clicking on the image of a historical monument, a transition to a slide with detailed information about it will be made.

Various formats of multimedia data can be used to simplify the perception of information by the consumer. For example, to provide information not only in text form, but also to illustrate it with audio data or a video clip. In the same way, contemporary art can present everyday, everyday things in a new way.

Various forms of information provision make possible interactive interaction of the consumer with information. Online multimedia is increasingly becoming object-oriented, allowing the consumer to work on information without having specific knowledge. For example, in order to upload a video to YouTube or Yandex.Video, the user does not need knowledge of video editing, coding and compression of information, knowledge of the design of web servers. The user simply selects a local file and thousands of other users of the video service have the opportunity to view the new video.

There are a number of programs that allow you to create multimedia presentations. The simplest and most common presentation option is a PowerPoint presentation (Power Point presentation), which is widely used in the business environment. Power Point format allows you to integrate video and audio files into a presentation, create primitive animation at the “slide show” level. The main advantage of this presentation format is the ability, without special knowledge and skills, to make changes to the presentation, adapting it to different audiences and goals. Among these programs, programs that can capture video clips from the screen and convert them to AVI and EXE video files are of great importance. Such programs include MicroSoft Camcorder, Hiper Cam, Lotus ScreenCam. However, these presentations are not interactive, but they can form part of a larger interactive presentation.

Thus, multimedia presentations are the most extensive presentation type in terms of its capabilities. This format of interactive presentations allows you to integrate sound, video files, animation, interface (menu-control system), three-dimensional objects and any other elements into the presentation without compromising quality.

The indisputable advantage of multimedia presentations is the ability to incorporate virtually any format into them - power point presentations, pdf presentations and video presentations. With the help of a convenient menu system, you can make it possible to "download" various files, up to the automatic exit to the site of the presentation object. In fact, multimedia presentations (multimedia presentations) can be branding, i.e. as an image clip (animation clip) to find excellent application at presentations, exhibitions, conferences, seminars and any other events, and can easily replace a sales manager, speaker or lecturer, advertising catalog or company website. The technological capabilities of multimedia presentations allow you to cope with almost any task. The balanced use of information, namely the alternation or combination of text, graphics, video and sound, all this makes multimedia presentations (multimedia presentations) as comfortable and easy to use as possible.