While today we consider the Greco-Roman period to be in the distant past, it should be noted that Cleopatra VII’s reign (which ended in 30 B.C.E.) is closer to our own time than it was to that of the construction of the pyramids of Giza. It took humans nearly 4000 years to build something—anything—taller than the Great Pyramids. Contrast that span to the modern era; we get excited when a sports record lasts longer than a decade.
Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computing, history, art history, economics, and more, including K-14 and test preparation (SAT, Praxis, LSAT) content. We focus on skill mastery to help learners establish strong foundations, so there's no limit to what they can learn next!