Problets - How instructors can use them.

Instructors can use the problets for learning or testing:

• For learning: Instructors can use the problets to help students learn new concepts and reinforce learned concepts. Instructors can assign students to use the problets in one of two modes:
  • In class, for a specified duration of time, in supervised mode;
  • After class, on students' own time, in unsupervised mode. In order to facilitate unsupervised use, problets provide help-menus, self-timing, and remote logging of data. In this mode, instructors need not set aside any class time to use the problets; students can use them to learn at their own pace, on their own time.
    However, in order for students to use problets in unsupervised mode, two conditions must be met:
    • Instructors must make using the problets a mandatory part of the course. Otherwise, students are unlikely to use problets, or for that matter, any other supplementary material;
    • Even though using the problets is a required part of the course, students must not get any credit towards the course grade for using the problets. This helps prevent cheating.
  The following features of the problets are designed to promote learning:
  • Problets generate problems as random instances of templates. Therefore, students can use the problets to practice problem-solving for as long/often as they like.
  • Problets generate problems adaptively, i.e., on only the topics the student has not yet mastered. This helps save students time.
  • Problets provide detailed feedback, including explanation of the step-by-step execution of programs. This helps students learn from their mistakes.
• For testing - Instructors can use the problets for assignments and tests in class. Since the problets have no way of authenticating the user, it is recommended that problets be used for testing in supervised mode only.
  The following features of the problets are designed to facilitate testing:
  • Problets generate problems from a predefined sequence of templates. This helps minimize the variability of the test from one student to the next.
  • Problets generate problems as random instances of templates. Therefore, every student gets a different set of problems. This prevents cheating during the tests.
  • Problets do not provide any feedback, not even whether the student's answer is correct or wrong.
  • Problets automatically grade the student's answers. This saves instructors the time and labor of grading the tests.
  • Problets collect and log the student's scores on the server. This again saves the instructor time and effort.
  • Problets can be configured to administer tests of fixed duration, tests with a fixed number of questions, or tests that last until the student has demonstrated a pre-determined level of mastery.