Education is Curiosity, Enabled
I'm of the opinion that we could teach our young children subjects like calculus, if only we had mechanisms through which to empower those with curiosity to play with them. Then, the application of the effort to teach becomes one of rewarding knowledge, rather than repetitive structures of memorization and batteries of tests.
Take, for example, these visualizations of various concepts in mathematics. How enlightening would it be if we could play with these as we work through the process of learning the equations that describe them, letting our brain form the map between the system's description, its properties, and its behavior?