Publications will provide data on analysis of the diagnostic items and assessments. Because the learning trajectories and materials will be informative to teachers who will be implementing the CCSS, the work has the potential to appeal to and reach a very large audience. The learning trajectories will be done in coordination with the Common Core State Standards (CCSS) in mathematics. Three learning trajectories will be developed and made available electronically with supporting materials. For each of the three trajectories, about 150 assessment items will be developed and field tested with a large group. Other students from grades 4 through 8 will be interviewed. Some of these students will be observed longitudinally over the two years. Students in grade 3 will be observed and interviewed while engaging in work on fractions, ratios, decimal, and precents. The learning trajectories will be developed through literature reviews, whole class teaching experiments, clinical interviews, and large-scale assessments. The project will be done by researchers at the North Carolina State University in collaboration with RoleModel Software Inc.,and the University of Maryland. The levels of proficiencies will be provided with the outcome spaces, the exemplary items, the student work, and videos of student responses. The learning trajectories will be available both electronically and in print.

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Technologies such as mobile phones, tablets, and computers will be used to deliver, analyze, and report diagnostic data on students. These assessment items will be useful for diagnosing student learning. Three LTs will be produced and validated along with over 125 assessment items for each of these three trajectories. A system will be developed to automate data collection for field testing assessment items to determine students' attainment of proficiency levels. This project will build and validate learning trajectories (LTs) in mathematics for fraction, ratio, and for decimal and percent to represent learning by grades 3-7 students.

Primary Place of Performance Congressional District:Ġ40106 NSF Education & Human Resource 040106 NSF Education & Human Resource

Jere Confrey (Principal Investigator) Alan Maloney (Former Co-Principal Investigator).

Completing, Validating, and Linking Learning Trajectories for K-8 Rational Number Reasoning Tied to the Common Core Standards NSF Org:

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