Think of them as the cool stuff you do outside of school to spice up your knowledge. This includes things like diving into extra readings, watching informative videos or podcasts, attending interesting lectures, exploring museums or cool places, and even taking online courses (you might hear them called MOOCs). Engaging in these activities not only extends what you learn but also hones your independent study and research skills. Plus, they’re like secret weapons when it comes to applying for universities, apprenticeships, or jobs, showing that you’re not just a textbook learner but someone who loves to explore and discover.