Moodle allows professors to organize and make available to their students a variety of resources and activities. These might include a syllabus, assignments, media files, web resources, interactive activities, discussion forums, quizzes, polls, wikis, announcements, and drop boxes for submitting assignments. Moodle can also be used to send email messages or to chat in real time. Many professors also choose to use the Moodle grade book so students can see their grades online. Individual professors can choose which of these resources and activities to include in their courses.