This lesson will be continuing an introduced concept of counting from one to five and reassessing its mastery.  This will be accomplished by use of PowerPoint on the television screen, manipulatives (corn kernels, popcorn, ears of corn, tamales, and corn tortillas), and worksheets of a variety of faded practice styles and levels.  My class consists of 12-15 moderately mentally retarded children, most of which have Down's syndrome.  All but two are Hispanic and they are between the ages of 14 and 22 years of age.  Their abilities range from very low to a functional level, approximately 3/4 - 7/8 years old mentally.  Two of the students in my class can read the names of all their classmates and basic words, but most cannot recognize their own name consistently.  It is important to allow the students to build on known elements and quantities within their environments.   Our group chose to use corn as it is a basic ingredient of many Hispanic foods and a familiar food (in many forms) to our population.  To use corn in a mathematical activity was challenging and so my idea may be very simplistic.  This is something I will use in my classroom as it is truly written for their level, and the objects can be changed and rearranged to the same lesson over and over to reassess its mastery.  This is one of the math lessons included in our unit, also included in the "corn" unit are: history, language arts, and social studies.