Activity Modules
Moodle contains a wide range of activity modules that can be used to build up any type of course.
 Forums
This activity can be the most important - it is here that most discussion takes place. 
Forums can be structured in different ways, and can include peer rating of each posting.
The postings can be viewed in a variety for formats, and can include attachments.  
By subscribing to a forum, participants will receive copies of each new posting 
in their email.  A teacher can impose subscription on everyone if they want to.
 Labels
This is a not a true activity - it is a "dummy" activity that allows you 
to insert text and graphics among the other activities on the course page.
 Resources
Resources are content: information the teacher wants to bring into the 
course.  These can be prepared files uploaded to the course 
server; pages edited directly in Moodle; or external web pages
made to appear part of this course.
 Assignments
Assignments allow the teacher to specify a task that requires students 
to prepare digital content (any format) and submit it by uploading it 
to the server.  Typical assignments include essays, projects, reports 
and so on.  This module includes grading facilities.
 Quizzes
This module allows the teacher to design and set quiz tests, consisting of 
multiple choice, true-false, and short answer questions.  These 
questions are kept in a categorised database, and can be re-used
within courses and even between courses.  Quizzes can allow 
multiple attempts.  Each attempt is automatically marked, and the 
teacher can choose whether to give feedback or to show correct answers.
This module includes grading facilities.
 Surveys
   The Survey module provides a number of verified survey instruments that
   have been found useful in assessing and stimulating learning in 
   online environments.  Teachers can use these to gather data from their
   students that will help them learn about their class and reflect 
   on their own teaching.
 Choices
A choice activity is very simple - the teacher asks a question and specifies a 
choice of multiple responses.  It can be useful as a quick poll to 
stimulate thinking about a topic; to allow the class to vote on 
a direction for the course; or to gather research consent.