Accumulated evidence indicates that low spatial ability makes a contribution, separate from levels of general or verbal intelligence, to the unlikelihood of students enrolling in, or succeeding in, STEM subjects. Further, there is a tendency for female students not to perform as well as males on some spatial tests, suggesting that this might be…

The 21st century student learns and communicates in the virtual world. In order to meet the individual instructional needs of the students, virtual science laboratories should be researched to accomplish the goal. This study evaluated the effectiveness of a virtual chemistry laboratory in enhancing students' conceptual understanding as a…

Success in undergraduate chemical experiments requires students to develop knowledge and skills of instrumentation, equipment, and chemical techniques. In this technology report, we propose an adaptable and user-focused strategy to improve students' foundational skill and proficiency with chemical laboratory techniques and instrumentation. The…

Acid-base chemistry is a foundational topic that is taught in courses across the chemistry curriculum. Students often have difficulty distinguishing between the different theories of acid-base chemistry--Brønsted-Lowry and Lewis acid-base chemistry--and applying these two definitions correctly in unfamiliar scenarios. To help students learn these…

Retention of knowledge from school courses has long been a concern of educators and administrators. Bahrick (1979) offered the general sentiment that "much of the information acquired in classrooms is lost soon after final examinations" (p. 297). This negative outcome is exhibited in curriculum that feature course sequences, where…

The aim of this research was to examine the effect of students' critical thinking skills using a guided inquiry model with macromedia flash and direct instruction in chemistry learning. The researchers used a quasi-experiment, with post-test only control group design. This research was conducted at SMAN 3 Kota Ternate. The research subjects were…

The enacted curriculum and classroom artifacts of a full unit of instruction from three subject areas (biology, chemistry, and physics) at two levels of instruction (regular and advanced) were analyzed for the presence and degree of mathematics and critical thinking. These characteristics were selected from a review of the literature on college…

Computer-based learning environments (CBLEs) have emerged as powerful tools to support K-12 science learning. The Gas Laws simulation, an interactive, online CBLE, has been empirically demonstrated to support high-school students' understanding of particle theory, generally. However, a sub-analysis of existing data suggested certain embedded…

Instructors in STEM classrooms often frame students' interactions with technologies to help them learn content. For instance, in many STEM domains, instructors commonly help students translate physical 3D models into 2D drawings by prompting them to focus on (a) orienting physical 3D models and (b) generating 2D drawings. We investigate whether…

The plan view is used in crystallography and materials science to show the positions of atoms in crystal structures. However, it is not widely used in teaching general chemistry. In this contribution, we introduce the plan view, and show these views for the simple cubic, body-centered cubic, face-centered cubic, hexagonal close packed, CsCl, NaCl,…

This commentary summarizes the authors' basic disagreements with the paper, "Rabbit-Ears, VSEPR Sterics, and Other Orbital Anachronisms," which criticizes the authors' usage of the hybrid orbitals for H[subscript 2]O in their book, "A Chemist's Guide to Valence Bond Theory" (Shaik and Hiberty, 2008). The current article shows…

In this study, secondary school students' (N?=?617; grades 7 to 10) understanding of models and modeling was assessed using tasks which explicitly refer to the scientific disciplines of biology, chemistry, and physics and, as a control, to no scientific discipline. The students' responses are interpreted as their biology-, chemistry-, and…

Learning model in Kazakhstani Universities is being focused on transforming education from teacher-centered to student-centered approach. This transformation requires academic staff retraining and a significant modernization of educational process. In this article we discuss issues of methodological readiness of academic staff for student-centered…

This paper investigates the frequency and contextual uses of the metadiscoursal devices of evidentials, code glosses, hedges and boosters in four academic disciplines, namely, linguistics, literature, chemistry and medicine. Hyland and Hinkel's taxonomies of metadiscourse provided the search items. The data analyzed consisted of a corpus of forty…

This qualitative study sought to explore Malaysian novice chemistry teachers' experiences in teaching mixed-ability students during their teaching practicum, focusing on their instructional strategies for dealing with those learners in the class. The researchers employed purposive sampling to select 12 trainee teachers to be involved in…