Launched in June 2016, the Smithsonian Learning Lab (SLL) provides access to the digital resources from across the Smithsonian's 19 museums, 9 major research centers, and the National Zoo, to be used as real-world learning experiences. It is designed to aid students in building lasting knowledge and critical skills that take learners from simply…

Students who are d/Deaf or hard of hearing often receive accommodations that are intended to increase access to the educational environment. The authors provide the results of a large national study of accommodations use in secondary and postsecondary settings. The article focuses on three aspects of accommodations use: access, quality, and…

This note shows that for semiprime rings the anticommutativity implies commutativity.

Background: The current study updates and extends the original research synthesis of effective instructional strategies presented in "Classroom Instruction that Works" ("CITW"; Marzano, Pickering, & Pollock, 2001). That work identified nine instructional strategies for improving academic achievement and synthesized findings from previous…

The potential of on-line discussions to prompt greater reflection of course material is often stymied by a tendency of students to agree with one another rather than to formulate counter-arguments. This article describes an experiment using note starters and elaborated cases to encourage counter-argumentation and examines interactions with…