Each of the five units in this instructional packet contains instructions for showing students how to "read" the ruler and measure, exercises to give the student the required practice needed to become skillful at this task, and tests to determine achievement. The five units cover inch, half-inch, fourth-inch, eighth-inch and sixteenth-inch measurements. A diagnostic evaluation test is provided for identifying those students who cannot measure correctly as well as each student's particular measuring problem. The material is presented in the form of 1-page instruction sheets, 1-page exercises and 1-page tests designed to be traced onto ditto or mimeograph stencils. The "How To" instructions are intended for use in making transparencies to be used when explaining and showing students how to measure or for use as student pass-out material. (HD)