This teacher's guide is designed to aid in the incorporation of programable calculators in the school mathematics program for pupils in grade 12. Warnings are given, including the need for care in modifying the curriculum so that students are not punished in the process. The concept of "black boxing," of letting the computer or calculator take charge of education, is stated as a concern that pupils may lose conceptual understanding of computation and take for granted that these devices can carry out difficult computations easily and efficiently. However, the benefits are seen to present powerful arguments for calculator use in the instructional program. In addition to discussing the pros and cons of programable calculators, the brief introduction gives ideas on student access to calculators, rules and guidelines for calculator selection, approaches to classroom presentation, and hints on calculator-caused changes in classroom dynamics. The bulk of this document consists of answers to problems from the student textbook. (MP)