Written in Spanish, this guide comprises the third grade unit of a career education curriculum developed for migrant students. The guide covers 11 jobs in the public services and agribusiness fields--nursing aide, sanitation worker, mail carrier, librarian, fire fighter, police officer, gardener, farmer, logger, miner, and forest ranger. Student workbook pages along with additional information for the teacher on the pages facing the student pages are contained in the guide. The student workbook pages contain language arts and mathematics activities. Job and role information for the unit are provided along with activities designed to teach students about the tools and tasks of each job through activities such as matching, ordering, writing, drawing, and taking true-false tests. The activities also allow the students to practice their skills of classifying, alphabetizing, charting, drawing conclusions, reading and sequencing numbers, self-expressing, and inferring. A pre- and post-assessment with student test leaflet, teacher guide, and answer sheet utilizes pictures to measure the extent to which students understand the tools needed and the work performed in the 11 jobs. (NQA)