Understanding the nature of science (NOS) is an important goal of science education, and textbooks are a key factor in shaping students' conceptions of NOS. In this study, we analysed NOS represented in middle school chemistry textbooks in the Chinese mainland. The selected materials were three most commonly adopted textbook series, which were…

The aim of this paper was to investigate chemistry teachers' attitudes towards certain characteristics of the nature of science and history and philosophy of science, and the influence of those views on their teaching practice. The sample comprised 272 chemistry teachers. A questionnaire was used for data collection. Most teachers recognised some…

This research follows the previous study examining the effect of chemistry education on students' perception and understanding to the nature of chemistry (NoC) as well as their attitudes towards it as a school subject. Grade 9 students (N = 282) at the end of their compulsory schooling were given a set of open-ended questions focused on their…

This article presents an instructional strategy called Premise-Reasoning- Outcome (PRO) designed to support students in the construction of scientific explanations. Informed by the philosophy of science and linguistic studies of science, the PRO strategy involves identifying three components of a scientific explanation: (i) premise--an accepted…

This article presents an instructional strategy called Premise-Reasoning-Outcome (PRO) designed to support students in the construction of scientific explanations. Informed by the philosophy of science and linguistic studies of science, the PRO strategy involves identifying three components of a scientific explanation: (i) premise--an accepted…

Everyone enjoys seeing the cloudy white fog generated when solid carbon dioxide (dry ice) is placed in water. Have you ever wondered what physical and chemical processes occur to produce this fog? When asked this question, many chemical educators suggest that the fog is produced when atmospheric water vapor condenses on cold carbon dioxide gas…

This paper reports on the design and enactment of an instructional strategy aimed to support students in constructing scientific explanations. Informed by the philosophy of science and linguistic studies of science, a new instructional framework called premise--reasoning--outcome (PRO) was conceptualized, developed, and tested over two years in…

The circuit board found in a commercial musical greeting card is used to supply music for electrochemical cell demonstrations. Similar to a voltmeter, the "modified" musical device is connected to a chemical reaction that produces electricity. The commercial 1 V battery inside the greeting card circuit board can be replaced with an…

Researchers at AAAS and BSCS have developed a six-week unit that aims to help middle school students learn important chemistry ideas that can be used to explain growth and repair in animals and plants. By integrating core physical and life science ideas and engaging students in the science practices of modeling and constructing explanations, the…

For students to develop an understanding of science content and processes, teachers must create classroom environments in which students use inquiry to understand the natural world. However, teachers frequently find it difficult, if not impossible, to demonstrate complex scientific concepts, which textbooks often fail to properly explain. During…

A low-cost portable fluorimeter was constructed using a 360 nm LED for excitation and a silicon photodiode for detection. The instrument is simple to operate and has been used to investigate fluorescent whitening agents extracted from various brands of paper, to determine the linear range and limit of detection of quinine in various commercial…

The purpose of this article is to share a learning-cycle sequence of lessons designed to convey the particulate nature of matter through use of physical models and analogical thinking. This activity was adapted from Conceptual Chemistry, a long-running professional development program for teachers of grades 4-9. Conceptual Chemistry's approach is…

Learning how the periodic table has developed over time can provide an important foundation for students' future science learning, as they begin to explore the explanatory power of other models in science. In this activity, students are given the opportunity to investigate the generation of the modern periodic table, through a process of creating…

Making chemistry both accessible and interesting to middle and high school students can be difficult. Convincing middle and high school teachers that they will learn something new and applicable from a professional development workshop in chemistry can be equally challenging. This paper describes the use of material science as a means to enhance…

Periodic Table Target, a game for middle school or high school students, familiarizes students with the form of the periodic table and the biological significance of different elements. The Periodic Table Target game board is constructed as a class project, and the game is played to reinforce the content. Students are assigned several elements…