A selection of language laboratory materials is presented for teachers of English as a second language to draw on in organizing preservice and inservice teacher education workshops. The materials consist of a set of audiotape recordings and tapescripts accompanied by a written commentary. Part 1 is an anthology of excerpts from English Language Teaching Institute units with dialogues and laboratory exercises. The focus is on the design of dialogues and drills, with notes given on the general design of each and examples to illustrate and support the comments. The drills include four kinds: listen and repeat, substitution, transformation, and implication. Part 2 contains notes on the general design of complete language laboratory units and five of these units from English Language Teaching Institute materials, with comments on each. The units are entitled "What Are You Doing, Joan?,""Mr. Roberts' Diary,""The Investigation,""Money for the Scheme," and "Please Explain." An appendix of specialized terminology and a bibliography are appended. (MSE)