are computer-based implementations of a specific subject that is normally aligned with a given
curriculum in school education. WBLRs can be created to support different topics of a given subject,
as well as learning material in a number of subject areas at all levels in school education.
Summarizing, the core of WBLRs is the integration of content, technology, and pedagogy into a
system that supports learning. With other words, WBLRs exist at the intersection of content, pedagogy,
and technology (Figure 1).