This report details the development of a learning progression for the understanding of fractions. The intended use of the learning progression is to support formative assessment practices for children as they receive instruction during elementary school. The validity of the learning progression is evaluated by mapping its levels to vertically scaled test items answered by students taking Curriculum Associates' i-Ready Diagnostic Assessment. It is shown that there is a significant moderate correlation between the levels of the learning progression and the difficulty of the test items associated with each level.
This report details the development of a learning progression for the understanding of fractions. The intended use of the learning progression is to support formative assessment practices for children as they receive instruction during elementary school. The validity of the learning progression is evaluated by mapping its levels to vertically scaled test items answered by students taking Curriculum Associates' i-Ready Diagnostic Assessment. It is shown that there is a significant moderate correlation between the levels of the learning progression and the difficulty of the test items associated with each level.