Nuclear science is an important topic in terms of its application to power generation, medical diagnostics and treatment, and national defense. Unfortunately, the subatomic domain is far removed from daily experience, and few learning aids are available to teachers. What follows describes a low-tech, hands-on method to teach important concepts in…

In introductory physics classes, we typically introduce the magnetic force, F = qv x B, on a moving charge and its vector nature using a right-hand rule, as described by numerous textbooks. When presented to students, it is often assumed that the velocity of the charge used in this calculation is relative to the magnetic field in which it travels.…

It is widely acknowledged in the literature on philosophy of biology and, more recently, among biologists themselves that the gene concept is currently in crisis. This crisis concerns the so-called "classical molecular concept", according to which a gene is a DNA segment encoding one functional product, which can be either a RNA molecule or a…

Existing research on students' conceptions contain competing philosophical positions concerning the nature of students' ideas--whether those ideas are coherent, systematic and theory-like, or fragmented and incoherent. Existing research has also focused primarily on studies of individual conceptions rather than investigating multiple, related…

Virtual reality environments are becoming increasingly popular as educational tools, but it remains unclear when these environments enhance learning or when they are a distraction from the learning process. We compared two different methods for teaching ecological concepts about the rocky intertidal zone by comparing an experimental (virtual)…

This dissertation conducted a science classroom intervention using two instructional approaches, computational modeling and paper-based pictorial modeling, in the context of food webs. A series of research papers were written on the impact of the intervention on students' attitudes and learning, and on teachers via professional development and…

Radiation, radiation detection and radiation protection are topics in physics and its applications which generate a wide interest in the public. This interest is either generated through medical procedures, applications of nuclear energy or nuclear accidents. The technical nature of these topics usually means that they are not well covered in the…

This study investigated the impact of the problem-solving model on students' concept mastery and motivation in learning heat based on gender. The method which was used in this research was quasi-experiment with pretest-posttest design in girls and boys class. Data are collected from girl class (N=16) and boys class (N=16) of a 7th grade in one of…

The challenge in chemistry courses for nonscience majors (such as nursing majors) is not that the students cannot learn chemistry but that they "think" they cannot learn chemistry. With this in mind, the authors' goal was to create a learning environment in which students would feel motivated to learn and would gain confidence in their…

Scientific argumentation is one of the core practices for teachers to implement in science classrooms. We developed a computer-based formative assessment to support students' construction and revision of scientific arguments. The assessment is built upon automated scoring of students' arguments and provides feedback to students and teachers.…

NGSS Early Implementers is a four-year initiative created to help eight California school districts and two charter management organizations, supported by WestEd's K-12 Alliance, implement the Next Generation Science Standards (NGSS). Designed for professional developers and administrators, this report describes 10 tools and processes that are…

The development of valid and reliable strategies to efficiently determine the knowledge landscape of introductory astronomy college students is an effort of great interest to the astronomy education community. This study examines individual item response rates from a widely used conceptual understanding survey, the Test Of Astronomy Standards…

Iconic gestures that are ubiquitous in speech are integral to human meaning-making. However, few studies have attempted to map out the role of these gestures in science teaching. This paper provides a review of existing literature in everyday communication and education to articulate potential contributions of iconic gestures for science teaching.…

In the 1990s, the field of geoethics started its development, associated with a set of ethical principles that regulate the profession of geologists in their relationship with society and with nature. Given the importance of this field, but also its youth, 36 higher education students attending a Master's of Geology course were surveyed (20 were…

A distinguishing feature of all the formative assessment probes in the "Uncovering Student Ideas" series is that each probe has two parts: (1) a selected answer choice that usually mirrors the research on commonly held ideas students have about concepts or phenomena; and (2) an explanation that supports their answer choice. It is this…