Modules can be used to organize your course by weeks, units, chapters, topics or whatever organizational structure works for your course. Within your modules, you can create a one-directional linear flow of what you would like your students to do and in what order. Modules can be accessed by clicking the Modules button in the Course Navigation Menu along the left side of any course. You may also choose to have the Modules page display as your course Home page.
Pages in Canvas are basically mini web pages, where you can add text, links, images, videos, and formatting like bulleted lists and headings. Pages can be used to add context to your course and the resources you'd like students to explore. You can use pages to create a course home page (also called a Front Page) that welcomes students to your course, module overview pages that introduce students to a module's objectives, topics and activities, and you can create pages that introduce students to each module's readings and videos.