This embedded mixed method study used a randomised controlled? trial design to examine two cohorts of upper (grades 4-6) elementary teachers' classroom implementation of nature of science (NOS) instruction following their participation in a statewide professional development (PD). The treatment group (n = 145) was compared to a control group (n =…

In this survey research study, the views of practicing teachers in select aspects of NOS were investigated in connection with the effects of several variables (teaching discipline, gender, education level, teaching experience and regional work location). The instrument used to collect data was an adapted version of "Scientific Epistemological…

Background: Development of scientific understanding of secondary school students is considered to be one of the goals of environmental education. However, it is not quite clear what instructional strategies and what other factors contribute to the effectiveness of environmental education programs promoting this goal. Purpose: The aim was to…

In this study we aim to find out whether a training program for secondary school science teachers which was organized based on the model of Pedagogical Content Knowledge (PCK), could improve their individual PCK for a specific scientific issue. The Evolution Theory (ET) and the Natural Selection (NS) were chosen as the scientific issues of…

Mass assessment of large samples' nature of science views has been one of the core concerns in science education research. Due to impracticality of using open-ended questionnaires or conducting interviews with large groups, another line of research has been required for mass assessment of pupils' nature of science conception meaningfully.…

The study evaluated the effectiveness of using short, school lab investigations to teach about the nature of science (NOS). A manipulated lab inquiry approach was used, which modified the investigations in ways that students were compelled to experience certain NOS aspects. An investigation about apple browning was used to teach about the…

We investigated changes in district science coordinators' understandings and practices following their participation in a statewide professional development (PD). Participants included 13 male and 34 female science coordinators from 42 different school districts in Virginia. Data included presurvey, postsurvey, and delayed postsurvey responses;…

This mixed method study was aimed at examining the influence of dual processing (Type 1 and Type 2 thinking) on the development of high school students' nature of science (NOS) views. Type 1 thinking is intuitive, experiential, and heuristic. Type 2 thinking is rational, analytical, and explicit. Three research questions were asked: (1) Do the…

This research aims to adapt The Nature of Science Instrument Elementary Scale (NOSI-E) developed by Peoples (2012) into Turkish for secondary school students and to analyse the psychometric properties of the scale setting out from the fact that it is a necessity of science education aimed to achieve for students/prospective teachers to have…

In this study, we reviewed 76 journal articles on employing drawing assessment as a research tool in science education. Findings from the systematic review suggest four justifications for using drawing as a type of research tool, including assessment via drawing as (a) an alternative method considering young participants' verbal or writing…

In most secondary physics textbooks, waves are first introduced with examples of mechanical waves because they can be illustrated by drawings and photographs. However, these illustrations are static and cannot reflect the dynamic nature of waves. Although many mechanical waves (e.g. water waves and vibrating strings) can be easily shown using…

Eleven years before the "rediscovery" in 1900 of Mendel's work, Hugo De Vries published his theory of heredity. He expected his theory to become a big success, but it was not well-received. To find supporting evidence for this theory De Vries started an extensive research program. Because of the parallels of his ideas with the…

A container was placed on top of a piece of white paper, and a pin positioned so that it vertically touched an outside wall of the container. Students were asked to predict the image of the pin when it was observed from the top of the container. Two scenarios of either an empty container or a container completely filled with water were considered…

Planar x-ray imaging is a ubiquitous diagnostic tool and is routinely performed to diagnose conditions as varied as bone fractures and pneumonia. The underlying principle is that the varying attenuation coefficients of air, water, tissue, bone, or metal implants within the body result in non-uniform transmission of x-ray radiation. Through the…

Experiments are described on collisions between two billiard balls and between a bat and a ball. The experiments are designed to extend a student's understanding of collision events and could be used either as a classroom demonstration or for a student project.