What is the additional learning that occurs while material is being taught called?

Incidental learning refers to the unintentional or unplanned acquisition of knowledge that occurs alongside the primary focus of study. This kind of learning can happen when learners absorb information without direct intent to learn it, often as a byproduct of engaging with the material. For example, while studying a particular topic, a student might come across related concepts or facts that enhance their understanding, even though those weren’t the main focus of their study session. This process enriches the educational experience by broadening the learner’s knowledge base and context, often leading to deeper retention and understanding of the primary material being taught.