One of the challenges of context-based science education is to construct high quality teaching materials. This paper presents results from a study investigating the heuristic value of an activity-based instructional framework for transformation of authentic scientific practices for use in the science classroom, in line with cultural historic…

The purpose of this research was to analyze the curriculum alignment of teachers in secondary education 5th grade Science course. Alignment levels of teachers in dimensions of acquisition, content, teaching methods and techniques, activity, material and measurement - assessment, and the reasons for their alignment/non-alignment to the curriculum…

Considerable anecdotal evidence indicates that some of the most difficult concepts that both high school and undergraduate elementary-education students struggle with are those surrounding evolutionary principles, especially speciation. It's no wonder that entry-level biology students are confused, when biologists have multiple definitions of…

This study aimed to investigate how a poster study focusing on the biographies of today's scientists affected 8th graders' scientist images. The study utilized a mixed model which combined qualitative and quantitative research techniques. 142 8th graders from a secondary school in Ankara Province Keçiören District participated in the study.…

Students need practice in proposing hypotheses, developing experiments that will test these hypotheses, and generating data that they will analyze to support or refute them. I describe a guided-inquiry activity based on the "tongue map" concept, appropriate for middle school and high school students.

Biological evolution still lacks representation in school, especially below high school level. In order to find new implications that could help achieve significant improvement in teaching evolution, twelve expert interviews with both renowned researchers and experienced science teachers were conducted. Results of the comparison between the…

This article is intended to model the ascent of the space shuttle for high school teachers and students. It provides a background for a sufficiently comprehensive description of the physics (kinematics and dynamics) of the March 16, 2009, "Discovery" launch. Our data are based on a comprehensive spreadsheet kindly sent to us by Bill Harwood, the…

National Aeronautics and Space Administration (NASA) Engineers at Marshall Space Flight Center, Dryden Flight Research Center, and their partners at other NASA centers and in private industry are currently developing X-33, a prototype to test technologies for the next generation of space transportation. This single-stage-to-orbit reusable launch…

The major portion of this publication is devoted to the presentation of 20 chemistry experiments dealing with corrosion of metals. The experiments are intended for high school level students or for chemistry teachers for demonstration purposes. Diagrams and illustrations accompany the written directions. Also included in this publication are…

ASCERTAINED WAS THE COMPARATIVE EFFECTIVENESS OF TWO TECHNIQUES OF TEACHING SEVENTH GRADE GENERAL SCIENCE--(1) A NON-PROGRAMED, PROBLEM-SOLVING APPROACH, AND (2) A PROBLEM-SOLVING APPROACH THROUGH SELECTED, OPEN-ENDED, LABORATORY EXPERIENCES. SPECIFICALLY, THIS STUDY ATTEMPTED TO DETERMINE WHETHER THERE WERE ANY SIGNIFICANT DIFFERENCES BETWEEN THE…