Aknowledgements

We are most thankful to all those who helped this work to see light namely the school principal Mr. Mohamed Brigui for his trust and support.

Aknowledgement is also made to the parents of the students who encouraged them and allowed them to come outside school hous and even during the holidays as well as granting their permission to confirm to the competition criteria.

Special thanks to Mr. Hechmi Gabsi, the school economist who is a real computer professional and who was always ready to solve any technical problems.

We would also like to thank the thinkquest coordinator in Tunisia Mrs. Gamra Znaidi and all the INBMI staff who ensured the necessary training and facilities for uploading the site.

The team members also deserve a thank you for their tedious work and devotion.