When to use the ERL?
    The ERL can be used in the classroom as a resource for your lesson plan presentations or at home when you want ideas for preparing your lesson plans.

Why do we need the ERL?
     If you want to operate in accordance to the 21st century educational standards, then you will have to use the ERL. A lot of educational theories call for the use of such a library:

    - Multiple Intelligence Theory: Human process and gather information differently. Gardner identified different styles of learning as eight distinct intelligences. Multimedia technology can maximize the multiple intelligences the learner possesses. One challenge educators face is how to deliver materials and subject matter to learners whose acquisition of knowledge depends on their mode of learning (intelligence); students would better be served if disciplines could be presented in number of ways. The ELR offers a medium that addresses these intelligences.

    - Constructivism: Learning is an active process in which learners construct new ideas or concepts; the instructor should try and encourage students to construct hypotheses, make decisions and discover principles by themselves. To do so, the instructor should try to start the teaching/learning session with an example not by stating definitions or anything else. Here comes the role of the ERL:

To provide learning opportunities (examples) for students so that they may be able to construct the relevant knowledge.

 “Stating a theorem and then providing an example of it is like teaching backwards.”