Show the students a simple computer program and explain how it would work. Include in the explanation all of the vocabulary needed for a full understanding.
Take a small group of students to a computer center to use the terminals. Prepare programs for the students ahead of time to insure that the programs will meet the level of the students. Allow the students freedom to explore the programs.
Help the students write simple programs of their own to solve. A possible way is to make a flowchart first to show the details of the program.