Chapter 4Effective Presentation

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Chapter 4 Effective Presentation

• 4.1 Multimedia Elements 74
• 4.2 Effective Presentation 79

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4.1 Multimedia Elements
Chapter 4 Effective Presentation

• 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

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4.1.1 Text
4.1 Multimedia Elements

• 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

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4.1.2 Sound (1)
4.1 Multimedia Elements

• 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

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4.1.2 Sound (2)
4.1 Multimedia Elements

• 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

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4.1.3 Graphics (1)
4.1 Multimedia Elements

• 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.

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4.1.3 Graphics (2)
4.1.3 Graphics

• 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

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4.1.3 Graphics (3)
4.1.3 Graphics

• 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

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4.1.3 Graphic File Size (1)
4.1.3 Graphics

• 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.

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4.1.3 Graphic File Size (2)
4.1.3 Graphics

• 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

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4.1.4 Animations
4.1 Multimedia Elements

• 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

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4.1.5 Video (1)
4.1 Multimedia Elements

• 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

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4.1.5 Video (2)
4.1 Multimedia Elements

• 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

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4.2 An Effective Presentation
Chapter 4 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

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4.2.1 Planning for Presentation
4.2 Effective Presentation

• Time constraints
• Plan your time reasonably
• Dont 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)

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4.2.2 Selecting appropriate Information
4.2 Effective Presentation

• 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

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4.2.3 Organising the Relevant Information
4.2 Effective Presentation

• 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

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4.2.4 Criteria for an Effective Presentation (1)
4.2 Effective Presentation

• 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

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4.2.4 Criteria for an Effective Presentation (2)
4.2 Effective Presentation

• 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.

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4.2.4 Criteria for an Effective Presentation (3)
4.2 Effective Presentation

• 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