轰炸手机短信软件恒策技术推广组iOS 设备 Apple App Store [Duolingo](https://apps.apple/us/app/duolingo-language-lessons/id570060128) [Khan Academy Kids](https://apps.apple/us/app/khan-academy-kids/id748434584) [Coursera](https://apps.apple/us/app/coursera-online-courses/id643298437) [Udemy](https://apps.apple/us/app/udemy-online-courses/id1030032011) [EdX](https://apps.apple/us/app/edx-online-courses/id1067328703) Android 设备 Google Play Store [Duolingo](https://play.google/store/apps/details?id=com.duolingo) [Khan Academy Kids](https://play.google/store/apps/details?id=org.khanacademy.android) [Coursera](https://play.google/store/apps/details?id=com.coursera.android) [Udemy](https://play.google/store/apps/details?id=com.udemy.android) [EdX](https://play.google/store/apps/details?id=org.edx.mobile) 其他平台 网浏览器 Coursera ([coursera.org](https://coursera.org/)) EdX ([edx.org](https://edx.org/)) 特定学科的教学应用 数学 Khan Academy ([iOS](https://apps.apple/us/app/khan-academy-kids/id748434584), [Android](https://play.google/store/apps/details?id=org.khanacademy.android)) Photomath ([iOS](https://apps.apple/us/app/photomath/id918890432), [Android](https://play.google/store/apps/details?id=com.microblink.photomath)) 科学 Google Science Journal ([iOS](https://apps.apple/us/app/science-journal-by-google/id779860375), [Android](https://play.google/store/apps/details?id=com.google.android.apps.sciencejournal)) Khan Academy ([iOS](https://apps.apple/us/app/khan-academy-kids/id748434584), [Android](https://play.google/store/apps/details?id=org.khanacademy.android)) 历史 TimeMapper ([iOS](https://apps.apple/us/app/timemapper/id442347880), [Android](https://play.google/store/apps/details?id=com.thelearningapps.timemapper)) HistoryMaps ([iOS](https://apps.apple/us/app/historymaps-of-the-world/id516801457), [Android](https://play.google/store/apps/details?id=ba.lego.history.maps)) 艺术 Khan Academy ([iOS](https://apps.apple/us/app/khan-academy-kids/id748434584), [Android](https://play.google/store/apps/details?id=org.khanacademy.android)) Google Arts & Culture ([iOS](https://apps.apple/us/app/google-arts-culture/id545095154), [Android](https://play.google/store/apps/details?id=com.google.android.apps.cultural))