The DALI4US project is developing a comprehensive educational package for data literacy, which includes the development and testing of cross-curricular materials and sample lesson scenarios, professional training for teachers (including evaluation of the approaches), adaptation of the Orange Data Mining tool and platform for the needs of upper primary school teachers and students, and policy recommendations for improving data literacy education in primary schools. UL FRI (Biolab) contributes to the project by developing the OrangeEDU educational platform (a web-based version of Orange that supports real-time collaboration on workflows, embedding of individual widgets into other websites, and additional customization of widget functionalities based on the desired level of complexity), providing teacher training, and developing, preparing, and adapting educational materials based on feedback from teachers.