Provide hands-on activities for practice and mastery. Check for understanding of concepts and skills by using relevant standard materials, i.e. worksheets, text problems, workbooks, teacher prepared exercises, etc.

Quiz. Worksheet on the immune system and the AIDS virus.

Objective: To check the students' understanding of the composition and action of a virus and to apply that information to a specific viral infection.

Activity: The students take a short objective quiz on the terms and concepts presented. Then they work with a partner on completing a worksheet which illustrates the unique features of the immune system and the action of the AIDS virus which gives it the name Auto Immune Deficiency Syndrome. The worksheet follows at the end of the cycle.

Assessment: Students ability to do well on the quiz and to successfully complete the interpretive worksheet.