A publication in which recent challenges in project partner countries (CY, EL, FIN, EE, PT) are identified and criteria & Instructional Design of the AR/MR/VR LOs within Remote/Local Labs are developed under the IBSE approach with respect to diversity. The Enlivened Laboratory Methodological Guidelines (ELMG), Learning Objects (LOs) and Lesson Plans (LPs) created during the EL STEM project account for diversity and accessibility in the classroom and the need to engage both male and female students, as well as students from low socioeconomic backgrounds, and with disabilities. The innovation of this IO lies in the combination of IBSE approach and new AR/MR/VR technologies within the educational process to improve 12-18 years old students’ performance and attitudes and to reduce disparities in STEM outcomes between different EU countries.