In this study, it was aimed to develop a valid and reliable "Awareness Scale for Web 2.0 Tools". The research sample consists of 310 secondary school students studying in the 2020-2021 academic year. An in-depth literature review was carried out for the scale aimed to be developed. As a result of the literature review, a draft scale form consisting of 70 statements was prepared. The draft form created was presented to the opinions of field experts and reduced to 54 statements in line with their opinions. The draft scale form, which was controlled by teachers and language experts, was piloted and finalized, and then applied. The analysis of the obtained data was carried out by using SPSS and Lisrel statistics programs. With the construct validity of the scale, exploratory factor analysis and confirmatory factor analysis; Its reliability was demonstrated by analysis based on Cronbach alpha internal consistency coefficient. As a result of the exploratory factor analyzes, the scale, which has a structure of 27 items in total with 3 factors, was examined as a result of the confirmatory factor analysis, and the 3-factor structure was verified. The Cronbach alpha internal consistency coefficient of the scale was found to be 0.929 and it was found to be highly reliable. Within the framework of the research, a 5-point Likert-type "Awareness Scale for Web 2.0 Tools" consisting of 27 items with 3 factors has been introduced for middle school students. As a result, it has been determined that the Awareness Scale for Web 2.0 Tools, which has been developed, is a scale with proven validity and reliability that can be applied to middle school students.
Keywords: Web 2.0 tools, awareness,scale development, secondary school students