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Chapter 4 Effective Presentation

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  1. Chapter 4 Effective Presentation 4.1 Multimedia Elements 74 4.2 Effective Presentation 79

  2. 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

  3. 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. 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

  5. 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

  6. 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.

  7. 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

  8. 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

  9. 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.

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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)

  16. 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

  17. 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

  18. 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

  19. 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.

  20. 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