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This section provides details about key user views and interactions when using
Classroom add-ons. You should familiarize yourself with each topic before
building an add-on.
Views
Users see your add-on's content in iframes. Each iframe loads a URL that you
specify. When opened, Google Classroom will append query parameters to each
URL with identifiers or authentication tokens. See theiframe and query
parameter detailspage for technical information.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],[],null,["# User journeys\n\nThis section provides details about key user views and interactions when using\nClassroom add-ons. You should familiarize yourself with each topic before\nbuilding an add-on.\n\nViews\n-----\n\nUsers see your add-on's content in iframes. Each iframe loads a URL that you\nspecify. When opened, Google Classroom will append query parameters to each\nURL with identifiers or authentication tokens. See the [iframe and query\nparameter details](/workspace/classroom/add-ons/developer-guides/iframes) page for technical information.\n\n**Teachers** can access the following views:\n\n- [Attachment Discovery iframe](/workspace/classroom/add-ons/get-started/iframes/attachment-discovery-iframe), to find and select an attachment\n- [Teacher View iframe](/workspace/classroom/add-ons/get-started/iframes/teacher-iframe), to preview an attachment\n- [Student Work Review iframe](/workspace/classroom/add-ons/get-started/iframes/grader-iframe), for teacher to review and grade the student's work\n- [Link Upgrade iframe](/workspace/classroom/add-ons/get-started/iframes/link-upgrade-iframe), when upgrading a [`Link`](/workspace/classroom/reference/rest/v1/Link) attachment to an add-on attachment\n\n**Students** can access the following view:\n\n- [Student View iframe](/workspace/classroom/add-ons/get-started/iframes/student-iframe), to view or complete the attachment\n\nInteractions\n------------\n\nThe following pages discuss required add-on user interactions. Review each\nbefore designing your add-ons user experience.\n\n- [Add-on listing](/workspace/classroom/add-ons/get-started/add-on-listing), for teachers and administrators to discover and install your add-on\n- [Sign in](/workspace/classroom/add-ons/get-started/sign-in-journey), to authorize your application\n- [Attachments](/workspace/classroom/add-ons/get-started/attachments-journey), the resource add-ons create on assignments, announcements, or materials\n- [Mobile experience](/workspace/classroom/add-ons/get-started/mobile-journey)\n- [User support and feedback](/workspace/classroom/add-ons/get-started/iframes/support-and-feedback), so users can reach your support resources through the add-on"]]
