tabsgit add AndroidManifest.xml res/values/strings.xml src/com/example/educationalapp/Topics.java src/com/example/educationalapp/Quiz.java res/layout/er_tab_fragment.xml res/layout/quiz_tab_fragment.xml res/layout/tabs_layout.xml res/layout/videos_tab_fragment.xml res/menu/tabs.xml src/com/example/educationalapp/ERTab.java src/com/example/educationalapp/QuizTab.java src/com/example/educationalapp/Tabs.java src/com/example/educationalapp/VideosTab.java