This guide is a collection of practical ideas for teaching vocabulary and vocabulary development skills to learners of a second language. Most are contributed by teachers of English as a Second Language, but the activities may be appropriate for teaching other languages. Each idea is described briefly, with information given about appropriate proficiency level(s), specific aims, class time requirements, preparation time, needed resources, procedures, and caveats and options. An introductory section offers background information on principles of vocabulary teaching and learning. Subsequent sections contain classroom activities for: meeting new vocabulary for the first time (receptive and productive use, words within texts); establishing previously met vocabulary (revising words, working with definitions, word-action relationships, revising words in sentences); enriching previously met vocabulary (associations and lexical sets, collocations, and enriching meaning and productive use); developing vocabulary strategies (guessing words in context, word building, using dictionaries, giving learners control); and developing fluency with known vocabulary. (MSE)