下载 APKPure App
可在安卓获取Kha Academy的历史版本
教室是学校的免费服务
The classroom is a free service for schools. A learning library is available to you, for free.
Thousands of interactive exercises, videos, and articles at your fingertips. Study math, economics, (arithmetic, algebra, geometry, trigonometry, statistics, calculus), humanities (US history, US government, and politics), and more (including computer science principles) and much, much more. Connect with the academy and do assignments on the go.