Recent work by researchers has focused on synthesizing and elaborating knowledge of
students' thinking on particular concepts as core progressions called learning trajectories …

A collaborative action research project focused on the learning and teaching of fractions in
the junior grades was undertaken in 2011-2012. This project focused on representing …

El objetivo de este trabajo es caracterizar el uso de una trayectoria de aprendizaje de la
longitud y su medida como instrumento conceptual para favorecer la adquisición de la …

This chapter discusses research on learning trajectories for rational number reasoning,
illustrated by the development of a learning trajectory for equipartitioning, a construct …

Abstract Design research studies provide significant opportunities to study new innovations
and approaches and how they affect the forms of learning in complex classroom ecologies …

This article shows how Yup'ik cosmology, epistemology, and everyday practice have
implications for the teaching of school mathematics. Math in a Cultural Context (MCC) has a …

Teachers' ability to elicit and build on students' mathematical thinking during instruction is
critical in order to support students' mathematical growth. An emerging hypothesis in the …

This unlikely cast of characters, by working collaboratively in a trusting learning community,
was able to identify an approach to teaching rational numbers through measuring from the …

In this chapter, I examine the utility of a mathematics learning trajectory (LT) as a tool to
support teachers' attention to students' mathematical thinking. I present findings from five …

Formative assessment involves gathering evidence during the course of instruction to
provide feedback to teachers and students about learning (Allal and Lopez, 2005; Black and …