For a long time now, the general terminology in Western education in English has been learning materials and(alongside teaching materials). These materials can be print, audiovisual, online or anything else: the concept is mediamedium-independent. Learning materials can be physical or intangible. The thinking indicates materials conducive to educational aims.
The thing that identifies or qualifies items as learning materials is their purposeful integration into an educational context (e.g. a course), for the use of students. Typically, such a context should involve structuring these materials for delivery (teaching being regarded as a symmetrical activity with learning), not simply making them available for people to discover. Such structuring will typically involve connection of learning materials with plannedintended and defined learning outcomes or learning objectives (a concept discussed by many institutions, including Carnegie Mellon).
For example, the UNESCO paper for trainers ‘Teaching and Learning Materials: Analysis and Development in Basic Education’ routinely distinguishes between materials for teaching and for learning. Section 1.1 is concerned to make the distinction at the outset: ‘Definition of “Teaching” and “Learning” Materials’. That paper is undated, but a UNESCO report will have been up-to-date, and the most recent reference that it cites is from 1980.
The UK’s flagship distance education institution, The Open University, has been using the term ‘learning materials’ since its establishment in 1969. (ItThe OU was originally envisaged as a University of the Air, emphasising the idea of conventional lectures delivered by broadcast, which was not ultimately the OU’s main operational model.) From the early days, according to the requirements of a given course, its learning materials would include printed texts that were physically delivered to students, perhaps audio recordings delivered on vinyl or cassette, and possibly TV broadcasts that (given contemporary domestic TV equipment) could not necessarily be recorded and ‘owned’ by a given student. With the move over the years towards IT-based delivery, software might also be included in a course as learning material. These days, the OU tends to include an interactive, online component in any new course. The term A purposeful online quiz is still regarded as learning materialsmaterial persists.
Much more recentlyRecently, Subramaniam et al. have given the article ‘e-Content Development in Engineering Courses: Students Needs and Readiness’ (2013), for the International Journal of Business and Social Science. There, they give (p286) context and references for the same terminology in modern online educational delivery:
The widespread use of computers and the internet, gave a positive impact on the implementation of the [Problem-Based Learning] approach. This development got the attention of online learning materials development (Donnelly & Fitzmaurice 2005; McAlpine & Allen 2007).
There are very, very many examples of such usage, and if you wish I can provide more. For the moment, however, from a longlooong background in both face-to-face and distance education I can simply and professionally confirm the terminology.