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Copyright (C) 2002, Nick Andrew
This program is distributed under the terms of the GNU
General Public License (see http://www.gnu.org/licenses/gpl.html)
I wrote this simple CGI script to help my youngster with beginning maths. The
script generates a random math question (addition only supported at
present) which it presents as a form to the client. When the client
types an answer and submits, the script reports right or wrong to the
client and presents another question. The script counts the number of
questions asked and the number of correct answers.
- A correct answer will result in a random friendly image being displayed. No images
are supplied with this program - I just grabbed a few icons from the net.
- The score is kept in 2 cookies which expire after 1 hour.
Simply make a new directory on your webserver and copy index.cgi into
it. Make sure you enable "Options +ExecCGI" on the directory.
- Create a subdirectory called Right and put some icons into it.
On a correct answer, the script will choose one of the files at random
and display it as an image. Only filenamed ending in .jpg are
Feedback and improvements
If you make any improvements to this script, please send them to me
While writing this script, I was thinking of some improvements for the
- At present the script just presents random questions without limit. It
would be better for the student to have a finite set of questions which they
can answer and then complete a module, or a level, or simply have a break
before going onto the next set.
- The script should be able to issue math questions of various difficulty
levels. How do we know how difficult any given question is? For a small child,
"adding 2" can be a daunting challenge when compared with the familiar
"adding 1". Does a standardised grading exist for the difficulties of math
questions, which this program could use, in order to generate random questions
of the appropriate difficulty level?
- Assuming the above is taken care of (i.e. the program can generate
questions with varying amounts of difficulty), the program should be able
to track the progress of a student and adjust its difficulty level in
accordance with the student's skills and ability. For example if the
student answers more than some percentage of the current grade questions
correctly, then start to present harder questions.
- If the program is going to issue harder questions, there must also be
an explanation phase to show the student how to solve that type of question.
The program would need to alternate between providing explanations and
testing the student's knowledge.
- The script plus this README file.