Instructional technology can help teachers formalize alternative methods of assessment. It allows them to record and report on student performance more fully and more dynamically. This paper discusses tools and methodologies used by a group called Teachers Using Technology to Measure Mathematics Meaningfully as they expanded their repertoire of classroom assessment techniques to incorporate instruments such as computers, video cameras, and Sunburst's Learner Profile. These tools assist not just with the delivery of tasks but with the collection of data and observations about student response. The paper also chronicles the formation of Teachers Using Technology to Measure Mathematics Meaningfully, discusses their goals and research activities, and suggests some future implications for the use of technology in alternative assessment. (Contains 14 references.) (Author/BEW)