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Chapter 4 Effective Presentation. 4.1 Multimedia Elements 74 4.2 Effective Presentation 79. Chapter 4 Effective Presentation. 4.1 Multimedia Elements. Multimedia Elements include Text Sound Graphics Animations Video

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chapter 4 effective presentation

Chapter 4 Effective Presentation

4.1 Multimedia Elements 74

4.2 Effective Presentation 79

4 1 multimedia elements

Chapter 4 Effective Presentation

4.1 Multimedia Elements
  • Multimedia Elements include
    • Text
    • Sound
    • Graphics
    • Animations
    • Video
  • Multimedia elements as medium to convey information to your audience
    • They have different impacts on your audience
4 1 1 text

4.1 Multimedia Elements

4.1.1 Text
  • Used in
    • Heading and Text
  • Features include
    • Text colour, Typeface, Font Size, Font Style etc.
  • Merits of using text
    • Provided important information clearly
    • Linked to other multimedia elements
4 1 2 sound 1

4.1 Multimedia Elements

4.1.2 Sound (1)
  • Sound used in
    • transition, background music, or recording conversation
  • 1. Digital audio
    • Recorded sound that have been digitised
    • Recorded by a microphone and sound card
    • The most common form is
      • WAV (uncompressed) and
      • MP3 (MPEG-1 Audio Layer-3) (compressed)
    • Taking up large storage space
4 1 2 sound 2

4.1 Multimedia Elements

4.1.2 Sound (2)
  • 2. Computer Music
    • MIDI (stands for Musical Instrument Digital Interface) is a coded version of music
    • Recording musical notes
      • played by musical instrument, like piano or violin
      • interpreted by sound card
    • taking up very small storage space
  • Merits of using sound
    • Providing an additional medium over sight vision
    • Seek attention from audience
    • Increase the credibility of a presentation,
      • e.g. the speech of the principal
4 1 3 graphics 1

4.1 Multimedia Elements

4.1.3 Graphics (1)
  • Including
    • photographs, drawings, charts from a spreadsheet
  • 1. Bitmap
  • 2. Vector
  • 3. Graphic file size
  • Merits of using graphics
    • "A picture is worth a thousand words."
    • Help audience to understand most quickly
    • Providing visual impact by complementing the text on the page.
4 1 3 graphics 2

4.1.3 Graphics

4.1.3 Graphics (2)
  • 1. Bitmapped graphics
    • Using a matrix of dots (or pixels)
    • e.g.
      • Scanned images using a digital camera
      • Photo of digital camera
      • Screen captures
      • Graphics downloaded from Web, e.g. PNG, JPG and GIF
    • Giving realistic and precise image
    • Larger storage size
    • Lose quality enlarged
4 1 3 graphics 3

4.1.3 Graphics

4.1.3 Graphics (3)
  • Vector graphics
    • Using geometry, such as lines, circles or squares etc.
    • e.g.
      • Charts in a spreadsheet
      • Drawings by the tools in a presentation software
      • Files with extension WMF.
    • Used in illustrating concepts
    • Small storage size
    • Image quality is unchanged when resized
4 1 3 graphic file size 1

4.1.3 Graphics

4.1.3 Graphic File Size (1)
  • Bitmap graphic file size depends on
    • screen resolution (in pixel), or
      • the size of the graphic (in inches) and
      • print resolution (in dpi)
    • number of color used
  • Image size (Screen resolution) is measured in pixels
    • e.g. 640 x 480 pixels
  • The print resolution of a graphic is measured in dot (pixel) per inch (dpi).
    • For screen display, the resolution is 72 dpi.
    • For outputting on a printer, the resolution is more than 175 dpi.
    • For high quality output, the resolution can be as high as 300 dpi.
4 1 3 graphic file size 2

4.1.3 Graphics

4.1.3 Graphic File Size (2)
  • Typical numbers of colour used in bitmap graphics are
    • 2, 256, 65,536 and 16 millions
  • Bitmap graphic file size depends on
    • complexity of the graphic
    • unchanged by enlarging the graphic
4 1 4 animations

4.1 Multimedia Elements

4.1.4 Animations
  • Animations
    • Multiple drawings are shown in a rapid sequence to give an illusion of motion
    • Consist of moving objects
  • e.g.
    • Animated GIF and Flash Movie
  • Merits of using animations
    • Effectively demonstrate an idea
    • Have high impact
4 1 5 video 1

4.1 Multimedia Elements

4.1.5 Video (1)
  • Video
    • Full-motion recording of an event
    • Captured by a DV camera or a video capture card
    • Requires large storage space and a lot of computing power
    • File size depends on
      • Screen size
      • Colour depth
      • Frames rate:
        • Number of frames shown per second e.g. 30 fps
      • Duration
4 1 5 video 2

4.1 Multimedia Elements

4.1.5 Video (2)
  • e.g.
    • AVI, MPG etc.
  • Merits of using videos
    • “A video is worth a thousand of pictures.”
    • Videos have the greatest impact.
    • Your efforts will be appreciated
4 2 an effective presentation

Chapter 4 Effective Presentation

4.2 An Effective Presentation
  • 4.2.1 Planning for a presentation
  • 4.2.2 Selecting appropriate information
  • 4.2.3 Organizing relevant information
  • 4.2.4 Criteria for an effective presentation
4 2 1 planning for presentation

4.2 Effective Presentation

4.2.1 Planning for Presentation
  • Time constraints
    • Plan your time reasonably
    • Don’t overrun a presentation
  • Plan for the tools
    • Common IT tools include a computer and a data projector
  • Hardware constraints
    • Resolution of the data projector, lighting, Internet accessibility, sound from speaker
  • Activities
    • Role play, Discussion, or FAQ (frequently asked question)
4 2 2 selecting appropriate information

4.2 Effective Presentation

4.2.2 Selecting appropriate Information
  • 1. Selecting an appropriate topic (theme)
    • Start with a large scope
    • gradually reduce the scope to the most interesting topic
    • Take into account the time constraint and your own ability
  • 2. Selecting appropriate contents
    • Information must be accurate
    • Compare to other references
  • 3. Write your presentation in your own words
4 2 3 organising the relevant information

4.2 Effective Presentation

4.2.3 Organising the Relevant Information
  • 1. Refining the Information
    • Divide the presentation into several sections
    • Arrange the sections in a logical sequence
    • Create a content page
  • 2. Applying Interactivity
    • Add more user controls to your presentation
    • Without interactivity, the presentation appears in a linear fashion
    • Use hyperlinks to increase interactivity
    • Point to the main menu before a new subtopic is started
4 2 4 criteria for an effective presentation 1

4.2 Effective Presentation

4.2.4 Criteria for an Effective Presentation (1)
  • 1. Page Layout
    • Should be clear and consistent
    • The same set of fonts used throughout
      • Appropriate use of fonts in headlines, contents and keywords
  • 2. Use of text
    • Concise text should be used
      • One sentence should convey only one message
    • Sentences need not be complete
      • but they must be logical and grammatically correct
    • Condense the words so that
      • one line is used for one sentence
      • Each page limited to 4 to 5 sentences
4 2 4 criteria for an effective presentation 2

4.2 Effective Presentation

4.2.4 Criteria for an Effective Presentation (2)
  • 3. Use of bullets and indentations
    • Bullets applied to sentences
      • to group similar ideas together
    • Indentation
      • to illustrate different levels of concept.
  • 4. Use of color
    • Increase color contrast between text and background
      • e.g. Black text on a white background
    • Red can be used to highlight a single keyword.
4 2 4 criteria for an effective presentation 3

4.2 Effective Presentation

4.2.4 Criteria for an Effective Presentation (3)
  • 5. Use of graphics
    • Do not clutter the screen with graphics
    • Keep the number down to 2 or 3
  • 6. Page Transition
    • Avoid automatic page transition
    • Introduce interactivity
  • 7. Text transition
    • Do not over use the transition of text or sound effects
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