Learning should be Reinforced
Learners can’t understand a theory from one single lesson, but reinforcement allows the learner to understand the theory better
Stimulating the Mind
The learner’s activity must be challenging so they will be motivated to learn better and solve an existing problem that they have.
Multiple Modes of Representation

It allows the learner to learn through different means. Representations need not be a one-way communication, but it can be engaging and stimulating for the learner.