Designing for Your Centra Session: Design
GRAPHICS
It is important to keep presentations as easy to follow as possible.
One of the best ways to do this is to keep your graphics simple.
The most often used graphics are Images, Charts, and
Backgrounds.
Images
Images should be saved in either JPG or GIF format.
Pick images that are only as complicated as you need. Images that
are too highly detailed may appear unclear depending on the video
settings of the students' computers. Simple images with fewer colors
will be more easily understood by your students. In addition, the
less complicated an image is, the smaller the image file size will
be. Reduced file size will relate to faster transfer of the images
through the internet to your students.
Often times you may choose to incorporate images into powerpoint
slides or on web pages. It is important to note, that any image
that is on the screen may distract from other items presented at
the same time.
Charts
Charts should be simple and clear so that they are easily understood.
Choose charts that are bold and stand out. Bar graphs and
pie charts are good choices of clear charts. Line graphs
and XY plots are often difficult to read. If the data is
not ever displayed in such a way, do not force the data into a pie
chart or bar graph. If you consider a line graph
to be the most appropriate choice to display your data, be sure
to make the lines thicker than usual. As with anything else in your
presentation, labels, or keys that are included with the chart should
be clear and easy to find.
Backgrounds
It is best to only use a solid color background. If you must use
a background image, keep it simple both to reduce download time
and keep the presentation easy to read. Make sure that any background
contrasts well with the chosen text, or images that is placed on
it. Keep in mind that a presentation that would be printed out at
some point, should have a light background with dark text. Only
use dark backgrounds with light text for projected presentations
that are meant for larger rooms.
TEXT
The most prominent portion of any presentation, is text. In any
computer based (non print) setting, the reader will see text as
an image, rather than as words. With that in mind the rule for graphics
holds true for text, keep it simple. Text has 4 aspects you may
change Font, Type, Color and Size.
Font
Font refers to the set of type made up of letters, numbers and
symbols. Many fonts are common among current computers. The more
common fonts are clear and easy to read. Some of the most commonly
used fonts are:

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sans serif
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serif |
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The first two fonts (Arial and Verdana) are examples of sans serif fonts (without serif).
The last two (Times New Roman and Courier) are serif fonts. Serifs refer to the strokes in the
letters that come off of the main strokes of the characters. This
is identifiable when when comparing a serif font to a sans serif
font.
Sans serif fonts have less detail and tend to display more clearly
than serif fonts of the same size. Serif fonts are always suitable
for titles and large bulleted text. However, smaller text such as
labels and body text, is clearer and more easily read if it is displayed
in a sans serif font.
Style
Text style can help draw attention to sections of your text. Bold,
Italics, and Underlined text should only be used to
indicate text that is different from the rest. Do not use it continuously.
Bold is most commonly interpreted as a reinforcement of the modified
text. Italics is often used as a change in voice for any modified
text.
Because web pages use underlining along with a color change to
indicate hyperlinks, underlined text should be avoided in computer
based presentations. In this setting, underlined text that is not
a functional link, will be interpreted as a broken link. This has
the potential to confuse the reader. You should only use underlining
in cases where it is traditionally expected, such as in citations
for bibliographies.
Color
Just like text style, color can help to indicate a portion
of text that is different from the rest. Continuous changes
in color will be more of a distraction than anything. Limit
color choices to 2 or 3 outside of your chosen standard text
color. Do not vary these colors between screens and between
lessons if at all possible. Continuity in all aspects of your
design helps to keep the learner focused.
All chosen text should contrast well with any backgrounds.
In addition to contrast, be sure that text colors match well
with each other as well as with any graphics used. Although
they may contrast well with dark colors, stay away from very
bright colors. Bright green, blue, yellow, red etc., tend
to bleed on a computer monitor and become difficult
to read. |  |
Size
Text Size is used primarily to indicate a change in text
purpose. The larger the text is the more important it is.
The largest text on the page should be reserved for a title.
The smallest text on the screen should be for footnotes. Body
text should be somewhere in the middle.
Presentations, require fonts to be larger than usual so that
the words can be easily read. Titles should be at least 48
point. A good size for body text to be easily read is 32 point
or above. The smallest you should ever choose text for a presentation
is 24 pt. Try to use small fonts sparingly as it may not show
up well for some students. |
TITLES
Body
Notes |
LAYOUT
Layout deals with the way that elements of the presentation are
displayed on a screen. You can keep your presentation easy to follow
by keeping three items in mind.
- Limit your presentation to one key point per screen. Reducing
visable key points will allow students to keep their focus and
keep their mind on the task at hand.
- Place no more than 3 bullets on a screen at once. Too much information
will only distract the user. Similar to the first point, this
will help to maintain the student's focus.
- Keep your presentation aligned to the left. This will insure
that the majority of your information will be displayed on the
screen and not run off the right hand side.
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