We investigate three 8th-grade students' mathematical meanings developed in the context of using linked representations to generate animations of figural models tuned in musical rhythm in "MaLT2," a programmable Turtle Geometry in 3D resource affording dynamic manipulation of variable values. We adopted a modified version of the UDGS…

Computer science students often evaluate the behavior of the code they write by running it on specific inputs and studying the outputs, and then apply their comprehension to a more general understanding of the code. While this is a good starting point in the student's career, successful graduates must be able to reason analytically about the code…

Assessing students' participation in science practices presents several challenges, especially when aiming to differentiate meaningful (vs. rote) forms of participation. In this study, we sought to use machine learning (ML) for a novel purpose in science assessment: developing a construct map for students' "consideration of generality,"…

In their first years, infants acquire an incredible amount of information regarding the objects present in their environment. While often it is not clear what specific information should be prioritized in encoding from the many characteristics of an object, different types of object representations facilitate different types of generalizations. We…

Cross-curricula opportunities afforded by STEM education (Science, Technology, Engineering and Mathematics education), supports an environment where students can develop twenty-first century competencies. One approach to addressing cross-curricula opportunities in STEM education is the introduction of computer science (computer…

The present study explores reasoning and argumentation in Greek mathematics and physics texts in specific topics related to the notion of periodicity. In our study, argumentation is taken as the sequence of the modes of reasoning (MsoR) that an author develops in a text when organizing and presenting new knowledge. Inductive content analysis was…

This article presents a framework for understanding historical perspective taking (HPT), the effort to use historical material to explore the internal states of past people. It addresses gaps in HPT research by (a) linking HPT to theories and research from the social science disciplines on perspective taking and the self and (b) proposing a way to…

Purpose: This paper aims to explore the concept of sustainability imaginaries--unifying core assumptions on what sustainability entails held by stakeholders--set within a large suburban Canadian university. The study aims to expand the field of research into imaginaries by focusing on imaginaries within an institution as opposed to a societal or…

Preschool children's use of decontextualized language, or talk about abstract topics beyond the here-and-now, is predictive of their kindergarten readiness and is associated with the frequency of parents' own use of decontextualized language. Does a brief, parent-focused intervention conveying the importance of decontextualized language cause…

Fluent word reading is hypothesized to facilitate reading comprehension by improving automatic word reading, thus releasing a reader's cognitive resources to focus on meaning. Many students with learning disabilities (LD) struggle to develop reading fluency, which affects reading comprehension. This synthesis extends Chard, Vaughn, and Tyler's…

Research on corrective feedback (CF), a central focus of second language acquisition (SLA), has increasingly examined how teachers employ CF in second language classrooms. Lyster and Ranta's (1997) seminal study identified six types of CF that teachers use in response to students' errors (recast, explicit correction, elicitation, clarification…

Infants' disposition to learn repetitions in the input structure has been demonstrated in pattern generalization (e.g., learning the pattern ABB from the token "ledidi"). This study tested whether a repetition advantage can also be found in lexical learning (i.e., learning the word "lele" vs. "ledi"). Twenty-four…

Research on second language (L2) communication strategies over the past three decades has concerned itself broadly with defining their usage in terms of planning and compensation, as well as with the use of taxonomies for coding different types of strategies. Taking a Conversation Analytic (CA) perspective, this article examines the fine-grained…

In this paper, we describe our learning progressions approach to early algebra research that involves the coordination of a curricular framework, an instructional sequence, written assessments, and levels of sophistication describing the development of students' thinking. We focus in particular on what we have learning through this approach about…

This review examined the effectiveness of peer-mediated pivotal response treatment (PM-PRT) to increase social-communication skills for children with autism spectrum disorders (ASD). A systematic review was conducted of all published studies examining PM-PRT in school-aged children with ASD, based on an established rubric. Five PM-PRT studies…