This teacher's guide for grades 3 and 4 contains simulated work experiences for students using the isolated skill concept - assembling in sequence. Teacher instructions include objectives, evaluation, and sequence of activities. The guide contains pre-tests and post-tests with instructions and answer keys. Three pre-skill activities are suggested, such as "define the words work, job, skill and assembling in sequence in preparation for the simulated skill activity." Then, a skill activity is listed: "assemble in sequence eight unassembled items following printed instructions." Assembling activities for items such as a ballpoint pen, bicycle reflector, and a paintroller follows. A teacher evaluation sheet is included. Appended are (1) a list of materials needed to assemble the occupation simulation packet; and (2) pictures of water color posters: assembly of a paintroller, water color paint set, and a ballpoint pen. (CT)