What are the disadvantages of audiovisual aids

Overview of advantages and disadvantages

 

Benefits

disadvantage

 Blackboard
  • easy to handle

  • almost always available

  • independent of electricity

  • color representation possible

  • slows down the pace of presentation when dealing with complex issues

  • large writing surface

  • Deletion and correction possible at any time

  • ecologically harmless

  • Danger of speaking to the board

  • Difficult to speak and write at the same time

  • Writing time consuming

  • fully written boards must be wiped off

  • certain seating arrangements for fixed installation

  • Blackboard pictures can only be saved or stored photographically or by copying

flipchart
  • easy to use

  • comparatively little space required

  • transportable and can be set up flexibly in the room

  • ready-made flipchart sheets possible

  • not always available in schools

  • comparatively expensive paper

  • relatively small area for labeling (not suitable for very large rooms)

Daylight projector

  • generally available in schools, partly in every classroom

  • transportable and can be set up flexibly in the room

  • fast and easy production of foils

  • Eye contact with the audience can be maintained

  • Pictures / diagrams can be copied onto transparencies

  • suitable white projection surface or screen

  • Background noise

  • Tendency to use too many foils

  • depending on the light intensity, darkening problem

  • Foils and foil pens are not ecologically harmless

Audio cassette player
  • generally available in schools,

  • transportable and can be set up flexibly in the room

  • own and commercial recordings can be played

  • Sound quality depends on the room (size)

  • smaller portables often with insufficient performance

  • If necessary, amplifier system with boxes is necessary

  • unfavorable analog user guidance

CD player
  • transportable and flexibly set up in the room

  • Depending on the equipment, CDs you have burned yourself can also be played (CD-RW, MP3)

  • excellent recording quality

  • flexible digital user guidance

  • Sound quality depends on the room (size)

  • smaller portables often with insufficient performance

  • If necessary, amplifier system with boxes is necessary

Mp3 player
  • particularly easy to transport and flexible to set up in the room

  • A huge number of pieces of music are available "in a small space"

  • excellent recording quality

  • flexible digital user guidance

  • individual pieces of music can easily be downloaded from Internet providers such as iTunes

  • Loudspeakers, preferably active loudspeakers with their own built-in amplifier, must also be used and may require a power connection

  • Sound quality depends on the quality of the speakers and the room (size)

Video player
  • generally available in schools,

  • transportable and flexibly set up in the room

  • Presentation of self-produced videos or excerpts videos possible

  • relatively small picture with television set (only suitable for smaller rooms)

  • Beamer for large-screen projection not always available

  • unfavorable handling when using the analog tape counter

  • poor still image quality

DVD player
  • transportable and can be set up flexibly in the room

  • Depending on the equipment, self-produced video CDs, MP3 music formats, etc. can also be played

  • Commercial DVD demonstration

  • extremely flexible digital user guidance (menu control)

  • excellent still image quality

  • Dolby digital sound reproduction possible

  • relatively small picture with television set (only suitable for smaller rooms)

  • Projectors for large-screen projection are not always available

  • Dolby surround systems are usually not available and costly to install

 

Computer / notebook
  • Multimedia PC with moving images and sound playback

  • CD-ROM drive for playing multimedia CD-ROMs (edutainment, learning software)

  • DVD drive and DVD player software allows you to play DVDs

  • CD-ROM drive as a player for music CDs

  • Play MP3 music format

  • Presentation of self-made video CDs possible

  • diverse processing of audiovisual data, images, diagrams, videos, sounds ...

  • If certain software is available, use of multimedia presentation programs (e.g. Powerpoint possible)

  • Slide show with prepared slides, animations possible

  • only a very small image with the computer monitor or the laptop's LCD screen (can only be used by a few people)

  • Projectors for large-screen projection are not always available

  • certain hardware and software knowledge required

  • relatively poor device resilience with multiple users of the computer

  • it is not uncommon for compatibility problems to be encountered when installing multimedia CD-ROMs (educational software, etc.)

 

projector

  • transportable and can be set up flexibly in the room

  • often not yet available in smaller schools

  • comparatively expensive purchase

  • transportable and can be set up flexibly in the room

  • in combination with the corresponding devices for large-screen projection of videos, DVDs, video CDs and television images (usually via the input of a video or DVD player)
     

  • suitable white projection surface or screen

  • depending on the light intensity, darkening problem

  • Depending on the light intensity, it can also be used in larger rooms

  • comparatively poor sound quality, therefore good active speakers or amplification systems are often necessary