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The results of an educational project aimed at promoting the development of critical thinking and promote interest in experimental sciences in High Schools and College students is presented. In this paper, we made a compilation of several activities, which ways of integrating information technology and communication (ICT) in various experiments of science, which together can be used to implement a low cost "classroom-laboratory". With ICT we refer to the convergence of computers, software, audiovisual systems, Internet, telephone, and other equipment that integrates with some of these devices. To this end, several projects were developed, that can be transferred to high schools and colleges settings, with limited financial resources, as is frequent in Latin America. The projects highlight the methodological aspects of science and seek to integrate areas such as physics, mathematics, chemistry, computer science, art, etc. They aim to answer the questions: how do we know this?, why do we believe in that? These questions illustrate the nature of scientific thought. With the advent of programs such as "One Laptop per Child" that are being implemented in several Latin American countries, it is appropriate to use these resources as a basis to generate low cost laboratories. This contribution may be a useful tool to improve the quality of science learning and to encourage vocations in science and engineering. Furthermore, the development of a critical thinking, along with acquisition of skills in the use of ICT, can be essential in many academic and professional fields. [ABSTRACT FROM AUTHOR]