Today, children are surrounded by digital technologies and educational web applications that were not available a few years ago. As an IT educator and instructor of the Digital Academy at the educational institution Algebra Pula for this research, I chose the Code.org web application for learning the basics of computing. In the first part of the work, after the description of the web application, examples of the implemented activities of project teaching of informatics, which were performed during the school year 2017. / 2018., are shown. at the Algebra Digital Academy in the OŠ Vidikovac Elementary School. The aim of this paper was to adapt the research model that describes attitudes towards future use and satisfaction using the Code.org web application, based on the TAM model developed by Fred Davis. The Code.org evaluation questionnaire was created to examine the attitudes of students accepting the use of the web application and their satisfaction with the use of the web application. Data were collected from 114 elementary school students (8-14 years old) in the private school Algebra Digital Academy in several cities of the Republic of Croatia. The model consists of four variables: attitude towards usage, satisfaction, perceived usefulness and perceived ease of use. The model was estimated using the structural equation model (SEM) for which the SmartPLS3 software was used. The results show that the pupil's perceptions of usefulness when using this tool most affect their attitude towards the use of teaching tools. The results obtained from this paper can provide a useful insight into the process of implementing modern ICT technologies applied in the teaching and development of e-content for IT in schools in the Republic of Croatia.