Used Numbers: Real Data in the Classroom is a project of Technical Education Research Centers (TERC), Lesley College, and the Consortium for Mathematics and Its Application (COMAP). The Used Numbers materials focus on the processes of data analysis: collecting, representing, and interpreting data. Through collecting and analyzing real data, students develop and use ideas and tools from key areas of mathematics, counting, measuring, sorting, classification, estimation, graphing, computation in context, and statistics. They are also introduced to appropriate uses of calculators and computers. The Used Numbers program includes six developmentally-sequenced units of study for grades K-6. Each book offers a series of investigations that can be completed in about 15 class sessions with lots of hands-on activities, small group work, and team problem solving. Many teachers, both pre-service and practicing teachers, have found these units very helpful for use as a framework and basis for developing a more expanded curriculum replacement unit. These materials, originally funded as a part of a research and development project, are now available for publication through Dale Seymour Publications.
Counting: Ourselves and Our Families, Grades K-1, by Stone and Russell
Sorting: Groups and Graphs, Grades 2-3, by Russell and Corwin
Measuring: From Paces to Feet, Grades 3-4, by Corwin and Russell
Statistics: The Shape of the Data, Grades 4-6, by Russell and Corwin
Statistics: Prediction and Sampling, Grades 5-6, by Corwin and Friel
Statistics: Middles, Means, and In-Betweens, Grades 5-6, by Friel, Mokros, and Russell