Table of Contents - Vol. 19 No. 2 -
November 2002
- Pearls of URLs
This monthly item will highlight Internet web sites which are considered
"gems" by educators.
- Notes and Quotes
This regular column provides information on a potpourri of
technological "tidbits".
- IrfanView - Image
freeware you can count on!
Brian Metcalfe of Technology Education focuses on the
wide variety of powerful features of this freeware product. Although Brian
admits that he has only a rudimentary understanding of image structure,
format and effects, he uses this article to help readers learn how they
can save time and effort using this innovative tool. To illustrate the
practicality of using IrfanView in classroom settings, Brian describes two
different educational projects in which IrfanView was utilized
successfully. The following headings indicate the main points in this
article to which on-line readers may link:
- Freebie
Favourites
Brian Metcalfe shares a Microsoft Works travel
brochure template.
- Food
for Thought: "Learning to Get Back Up"
Craig B. Larson shares an inspirational message about the giraffe.
Pearls of URLs
eduScapes: A Site for Life-Long Learners at: http://eduscapes.com/
Little
Explorers - Picture Dictionary at:
http://www.enchantedlearning.com/Dictionary.html
Microsoft Skills 2000 - Museum
of Modern Technology at: http://www.actden.com/skills2K/
"Bits and Bytes" is an educational publication for the
students and staff
of the Winnipeg School Division
Brian Metcalfe - Editor: bitsandbytes@wsd1.org
Copyright © 2002 (ISSN 1195-5864)
Last revision date: November 20, 2002
Information has been shared with
420

Notes and Quotes
by Brian Metcalfe - Technology Education

Computer
Viruses Make House Calls
It is hoped that all our employees, who use a
home computer and do not have up-to-date virus scanning
installed, have taken advantage of the inexpensive Divisional employee
purchase plan to acquire the NOD32 antivirus software. However, I recently learned
that one of our employees was unable to save data to a floppy diskette.
After calling Dell support services, the individual was directed to
HouseCall at:
http://housecall.trendmicro.com This free, anti-virus web site
was able to scan and remove viruses on the individual's computer over the
Internet.
What's
with the new wheels?
Those of you who are fortunate enough to have a mouse with a wheel
between the buttons might want to investigate its use. Sure one can scroll
up or down documents but did you know that if the <Ctrl> key is depressed
while one rolls the wheel, it is possible to increase/decrease the font
size on documents. Internet Explorer browser users will note that when the
<Shift> key is depressed, while using the wheel, one can navigate backward
and forward through visited pages (just like clicking the Back and Forward
buttons).
[Thanks to Darrel Izzard at Kent Road School for this mouse wheel
trick.]
Data loss on floppies
Recently our team was contacted by an individual
who had lost anecdotal report card information which was being transferred
between home and school on a floppy diskette. This individual was using
Microsoft Word. Upon discussion, it was learned that the educator was
writing anecdotal comments in Word and saving the file(s) directly to a
floppy. Please note that at one time, when word processing software wasn't
as sophisticated as it is today, one could save directly to a floppy using
the File/Save As menu items. About two years ago we started encountering
problems on HyperStudio diskettes when users saved directly to a floppy
diskette. It seemed that as the files contained more sophisticated data
including sound and video, the floppy drive could not reliably save the
material directly. We advised educators to save their data to the local
hard drive and then copy the resulting data from the hard drive to the
floppy diskette. It appeared as though the COPY process was more reliable
than the SAVE process when using floppies. Readers who want to transport
data on a floppy are strongly encouraged to save the file to the local
hard drive. Then use either "My Computer" or Microsoft "Explore" to
navigate to the location of the file on the hard drive. One may then click
on the file and use Edit/Copy and Edit/Paste menu items to copy the file
to a floppy diskette. However Windows 95, 98 & 2000 users can simply
"right click" on the file and then "left-click" on the "Send To" 3.5"
Floppy (A:) to complete the task. Make certain one always watches to
ensure that the floppy drive light is extinguished before removing the
diskette.
Quote of the Month
-
"You are richer today if you have laughed,
given, or forgiven ... "

IrfanView - Image freeware you can count
on!
by Brian Metcalfe - Technology
Education

What educator today doesn't want to know how to work
more efficiently in order to save time? Teachers, who work with students
that use a variety of different image formats, will find the IrfanView
freeware program a very powerful and labour-saving utility.
The purpose of this article is to introduce
IrfanView, as a classic image conversion program, and illustrate how
teachers and students in our Division have used this freeware to save time and effort.
Where can I get IrfanView?
Irfanview, named after it's creator
Irfan Skiljan, can be downloaded as freeware for educational, non commercial
use, from the following web site:
| |
http://www.irfanview.com |
 |
Once this product is downloaded and installed, one can
begin to explore its many features. I must admit that I do not fully
comprehend the intricacies of different image file formats. My rather
simplistic approach is limited to the following basics about image file
types and their relative size:
- BMP (bit map) files are created with Windows
Paint/Paintbrush
Such files cannot be displayed on the Internet in this format as they tend
to be too large to load quickly. For optimal web page display BMP files
need to be converted to the more compact GIF or JPG formats.
- GIF (Graphics Interchange Format) file
formats compress bit-mapped images to a fraction of their original size
for fast loading and viewing on web pages. Also, a series of bit-mapped
files can be compiled into a special animated GIF for display on web
pages.
- JPG (Joint Photographic Group) file formats can be
used effectively to save photographic images in a smaller compressed state
for web page viewing.
To
illustrate this file format comparison, let us
examine a picture of our school division’s board office. The picture when displayed at 640 x 480
screen resolution,
(640 pixels or points of light horizontally across the computer screen and
480 pixels vertically), in 16.7 million colors, can be saved in a variety of
formats. Once the images are loaded on a web page, there
may be very little difference in the display quality. In such situations,
smart web managers, choose the file format (GIF or JPG) which is smallest so
the images load as fast as possible over the Internet. In our example,
the original bit-mapped image was reduced in size through compression to the Internet-ready files
as follows:
-
(BMP) 901 KB - non Internet display
- (GIF)
- 131 KB - Internet-ready -
reduced in size by a factor of 6.8
- (JPG) - 51 KB
-
Internet ready -
reduced in size by a factor of 17.6
In summary, I recognize that a single image can be
represented in a variety of formats and that each format has its strengths
and weaknesses (which is beyond the scope of this article). However as an
educator, if you are hoping to display the creative talents of your students
through images on a school web site, it is important to convert bit-mapped
(BMP) images to either of the "Internet-ready" GIF or JPG formats
with the smallest file size. Normally this conversion process can be quite
time consuming but IrfanView, when used effectively, can save users a great deal of time
and effort.
Classroom
Applications at Queenston School
Last year, I worked with Ellen Donogh, the
Teacher-Librarian at Queenston
School, who introduced Mrs. Harrison's Grade 2 students to a thematic unit
on quilts. This endeavour expanded to include my introduction of the basics of Logo programming to Mrs. Stooke's class of Grade 4 students.
We used the MSW Logo
educational freeware, available from: http://www.softronix.com/logo.html
to
learn about problem solving, geometry and symmetry. As part of our thematic
unit, each child was challenged to use the MSW Logo software in the lab to
design a patch which would be "woven" into a "friendship quilt". The Grade 4
students demonstrated their creativity by writing procedures to have the Logo "turtle" draw a symmetric pattern. Each
black and white pattern
was then captured using the MSW Logo and saved as a bit-mapped image.
During
the next class, each of the Grade 4 students worked with a Grade 2 partner. The older children helped the younger ones
retrieve their black & white patch and repeatedly select a colour and fill a
portion of the "patch" using the Windows Paint program. Once the
children in the team were satisfied with the coloured patch, they added
their respective initials to the patch and it was saved centrally.
Ellen wanted to celebrate the creativity of the
students by showcasing the patches, arranged in a quilt pattern, on the
Queenston web page. Unfortunately, each MSW Logo-created patch had been
coloured and saved as a bit-mapped image. Such BMP files could not be
directly integrated into an electronic quilt on a web page without
proceeding through a conversion process.
In IrfanView, like most image conversion programs, one
may select the menu items of File/Open and locate the appropriate bit-mapped
"patch". Once the correct BMP patch is loaded into the image manipulation
pane on the left and visually verified,
one may select the
File/Save As menu items and convert the image
to either its corresponding GIF
or JPG format. Although the process is relatively simple,
it can be quite time- consuming if one needs to repeat this procedure for
each child in a class of 25 students. IrfanView however makes such
procedures so much more efficient through the use of "thumbnails" and the
"batch" conversion process.
IrfanView Thumbnails
Having
the ability to see one's gallery of images without having to "Open" each
file is a powerful, time-saving step that is afforded in IrfanView. To view
one's images as thumbnails, one must begin by loading an image into the
left-hand image manipulation pane using the File/Open menu items.
When an image is displayed (as above), click on
the File/Thumbnails menu items to view all images in that folder in a
gallery on the right side of the screen.
IrfanView users can now open a particular image into
the left-hand image manipulation pane by double-clicking on its
corresponding thumbnail. Also one may use the traditional Windows folder
hierarchy display and click on any folder to open up any images in the
thumbnail gallery. One can also select a variety of thumbnail displays by
selecting the Options/Set thumbnail options menu items. However, the
ability to preview images without having to open them up individually is one
of the many time-saving benefits of IrfanView.
IrfanView "Batch" File Conversion
The problem which confronted Ellen Donogh and I at Queenston was how could
we quickly convert the 25 logo-created patches from the bit-mapped BMP
format to their corresponding GIF image format so they could be displayed on
a web page. Although we could load each BMP into IrfanView's left hand image
manipulation pane and save the resulting image as a GIF, we did not want to
repeat the process 25 times. It was the "batch" processing utility that is
built into IrfanView that saved us considerable time.
To accomplish this task I created two folders (BMPs &
GIFs) on my hard drive using the following directory structure.
- C:\TRANSFER\PATCHES\BMPs
(Input directory)
- C:\TRANSFER\PATCHES\GIFs
(Output directory)
Into the first directory, I copied all the BMP
patches that the student teams had saved to their local school's server "2Teacher" (T drive).
The next step involved opening one BMP patch file from the first directory
using the traditional File/Open menu items. In order to invoke IrfanView's
powerful "batch" conversion process, I selected the File/Batch
Conversion/Rename menu items to bring up the following screen:

As illustrated,
one can select each individual patch file and click on the "Add" button
to include it in the list of Input files.
However, it was easiest to just click the "Add all" button to
select all files.
Next lick on the
"Browse" button to select the location for the Output directory. I navigated
to:
C:\TRANSFER\PATCHES\GIFs
Make certain the radio button beside
"Batch conversion" is selected and click the pull-down menu (down arrow) in
the "Output format" area and choose to have the BMP files converted to "GIF - Compuserve GIF" format. Next click on the
"Start" button to have all the files converted in a "batch" without the need
for repeated steps.
Once all the patch files were converted to GIFs, Ellen had the Grade 2
students use Notepad to write a story titled "My Quilt Story". Each GIF
patch was assembled into an electronic "Friendship Quilt" in which viewers
could click on any patch and read the hidden story behind the patch.
Resources
Ellen found the following two books to be beneficial in this thematic unit:
Educators wishing to learn more about a quilt thematic unit with
Logo-generated patches are encouraged to visit the following sites:
IrfanView Slideshow
Student accomplishments, like the Logo-created and coloured patches,
need to be celebrated. Imagine the excitement as student-created images are
arranged for viewing in a slideshow format on Parent-Teacher nights. Yes ...
IrfanView can provide teachers with this display mechanism.
Once one has a series of images
arranged in a directory, one can begin by selecting IrfanView's File/Open
menu items to load an initial image. Next click on File/Slideshow menu
items. On the subsequent screen (which looks similar to the image on the
previous page)
one "Adds" the particular images to the "Slideshow files". Educators can
indicate how long each slide is displayed in seconds and if they wish to
have the images presented in a random fashion or automatically loop.
IrfanView Effects
Like most image conversion programs, IrfanView can
flip, rotate as well as re-size images. Readers are encouraged to explore
the special effects that IrfanView can apply to any image. To proceed one
must click on File/Open to load an image into IrfanView. Once an image is
displayed, one may click on the Image/Effects menu items and choose an
effect such as "3D Button", "Blur", "Explosion", or "Pixelize" to modify the
selected image.
IrfanView Scanner Support
If you have a scanner in
your classroom or lab, consider using IrfanView as the software interface.
Certainly one can use the scanning software that was supplied with the scanner
but if the scanner is "twain compliant", use the File/Select TWAIN Source
menu items to link IrfanView to your scanner. From now on students can
simply click on the File/Acquire menu items to scan images and automatically
load them into the powerful IrfanView environment.
Classroom Applications at Kent Road
School
Last year, Dave Argle's Grade 4 class at Kent Road
studied about Japan. In order to demonstrate their knowledge of Japan, each
student was asked to create a back-to-back, three panel, travel brochure.
Students explored a variety of resources, including the Internet, to help
locate facts which would be integrated into the six panels below:
| |
- Title
Page
- My
Favourite City
-
Population Facts
|
- Daily
Life
-
Interesting Facts
- History
of Japan
|

|
Although such a
brochure could have been created using Student Writing Center, Save wanted
his students to become more familiar with Microsoft Works. To facilitate
this endeavour, I created a two page Works template which students used to
create brochures.
In order
to capitalize on
the students' Internet research time Dave and I prepared a series of
bookmark/favourites that provided insight into
Japan. Each child was encouraged to search the Internet for relatively small
images that could be inserted into the brochure to highlight an important
fact about Japan. Students were taught how to acquire images off the Internet
(with appropriate credit) and these
images were saved to a specific directory on the server's "2Teacher" (T drive).
In addition, students were taught how to rename images when saving so that
an original image entitled "pagoda.gif" was not overwritten by a different
pagoda image. This folder of images became a central depository from which
any child in class could select a picture to enhance her/his own
publication.
However all the
downloaded images off the Internet were either in the GIF or JPG format.
Unfortunately the older workstations in the school lab would only accept the
insertion of a bit-mapped (BMP) file into the Works word processing brochure
template. Thankfully IrfanView came to our rescue.
IrfanView
Thumbnail
At the end of a class in which the students were searching for Japan-related
images, Dave and I sat down and examined the various pictures that the
students had downloaded off the Internet. IrfanView's Thumbnails enhancement
(previously describe on page 5) provided us an
easy way to examine the images, for example "samauri1.gif",
"samauri2.gif", and "samauri3.gif", to see if there were any duplicates.
Furthermore IrfanView's Thumbnails option provided us with information about
the actual dimensions of each image in pixels as well as the actual file
size so that we could eliminate large images and duplicates.
IrfanView
"Batch" File Conversion
Dave and I used the previously described conversion process to convert each
of the Japan-related GIFs to a correspondingly named bit-mapped BMP file.
When the "Add all" button (shown on page 6) was
clicked to transfer all the GIFs to the "Input files" list, we browsed for
an appropriate "Output directory" and selected the "Batch conversion"
process with a "Output format" selection of "BMP - Windows Bitmap". Once all
the GIFs were converted, the process was repeated selecting the JPGs as the
images that were to be converted to BMPs. All the converted
Japan-related BMP files were copied to the server's "2Student" (S: drive)
and placed in an appropriately named folder (which was set to "Read-Only"
status) from which the students could select images to enhance their travel
brochure.
During the next
class, each student started Works and loaded the travel brochure templates
making certain that the View/All Characters option was turned on. As
students inserted text or pictures they deleted the blank line paragraph
marks and attempted to keep the identifier marks (e.g. ** 2 **)
at the bottom of each column so that the column titles would align near the
top as shown:

Thanks to the multi-faceted capabilities of IrfanView, these two classroom
projects were successful and saved educators valuable time. Irfan, your hard
work, dedication and willingness to share your programming talents are appreciated by educators
world-wide!
Freebie Favourites
Those educators
who wish to acquire the Works travel brochure templates that I designed, may
download them by clicking on the links below:
 |
Side #1 of a 3-panel Microsoft Works travel
brochure (brochure1.wps)
[#321] |
|
Side
#2 of a 3-panel Microsoft Works travel brochure (brochure2.wps)
[#322] |
[Table
of Contents]

Food for Thought: "Learning to Get Back Up"
by Craig B. Larson http://www.motivational-messages.com/inspirationalstories1.html#story21

Bringing a giraffe into the world is a tall order. A baby giraffe falls
10
feet from its mother's womb and usually lands on its back. Within
seconds it rolls over and tucks its legs under its body. From this position
it considers the world for the first time and shakes off the last vestiges
of the birthing fluid from its eyes and ears. Then the mother giraffe rudely
introduces its offspring to the reality of life.
In his
book, A View from the Zoo, Gary Richmond describes how a newborn giraffe
learns its first lesson.
The mother giraffe lowers her head long enough to take a quick look. Then
she positions herself directly over her calf. She waits for about a minute,
and then she does the most unreasonable thing. She swings her long,
pendulous leg outward and kicks her baby, so that it is sent sprawling head
over heels.
When it doesn't get up, the violent process is repeated over and over
again. The struggle to rise is momentous. As the baby calf grows tired,
the mother kicks it again to stimulate its efforts. Finally, the calf
stands for the first time on its wobbly legs.
Then the mother giraffe does the most remarkable thing. She kicks it off
its feet again. Why? She wants it to remember how it got up. In the wild,
baby giraffes must be able to get up as quickly as possible to stay with
the herd, where there is safety. Lions, hyenas, leopards, and wild hunting
dogs all enjoy young giraffes, and they'd get it too, if the mother didn't
teach her calf to get up quickly and get with it.
The late Irving Stone understood this. He spent a lifetime studying
greatness, writing novelized biographies of such men as Michelangelo,
Vincent van Gogh, Sigmund Freud, and Charles Darwin.
Stone was once asked if he had found a thread that runs through the
lives of all these exceptional people. He said, "I write about people who
sometime in their life have a vision or dream of something that should be
accomplished and they go to work.
"They are beaten over the head, knocked down, vilified, and for years
they get nowhere. But every time they're knocked down they stand up.
You cannot destroy these people. And at the end of their lives they've
accomplished some modest part of what they set out to do."
[Table
of Contents]
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