This resource guide for teachers suggests activities for 20 instructional sessions for elementary children, particularly those in grades 3-6, to introduce them to the LOGO computer language. It can be used with five LOGO versions: Apple, Atari, MIT, Texas Instruments, and TRS. For each session, the guide covers objectives, concepts/skills, facilities/materials, and preparation; provides a chart of the relevant commands used in the five LOGO versions; describes student activities and assignments; and includes student worksheets. "Challenger" worksheets are provided for students who finish the basic assignments and are ready for more complex work. An introduction describes LOGO and discusses how it fits into the curriculum and how to get started. A scope and sequence chart indicates which of 10 educational goals are addressed by each session. Specific lesson topics include using the LOGO "primitives" as spatial commands, introducing students to the computer and to the LOGO turtle, changing directions by turning or pivoting, using a protractor, writing and editing procedures, rotation, LOGO procedures, recursion, and using variables as size input for geometric shapes. Fourteen charts for classroom use, answer keys, and a 17-item reference list are included. (LMM)