This USMES unit challenges students to construct practical shapes which can be used as dice to make a fair decision between two or among three, four, or more choices. The teacher resource book for the Dice Design unit contains five sections. The first section describes the USMES approach to student-initiated investigations of real problems, including a discussion of the nature of the USMES "challenges" and of classroom strategy for problem-solving activities. The second section gives information about the Dice Design unit, including an overview of possible student activities with comments on prerequisite skills, a flow chart and composite log indicating the range of possible student work, a paper describing the use of the unit in primary grades, and a list of questions that the teacher might use. Section 3 contains documentation of class activities, describing ways of introducing the unit and including teachers' logs for the unit. Section 4 includes references to other written materials relevant to the unit and section 5 consists of charts which identify the skills, concepts, and processes covered by the unit. (DT)