Chapter 4 effective presentation
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Chapter 4Effective 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 4Effective Presentation

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Chapter 4 effective presentation

Chapter 4Effective Presentation

4.1 Multimedia Elements74

4.2 Effective Presentation79


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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