Final answer:
Link to Learning features connect students with additional online resources related to the section topic, offering an opportunity for further research and learning enhancement.
Step-by-step explanation:
The Link to Learning is the feature that links you to outside websites where you can find additional information on the section topic. This feature directs students to online resources such as interactive exercises, animations, and additional readings which enhance their understanding of the core content. These Links to Learning are an excellent way for students to engage in further research and deepen their knowledge on the subject matter.