Acid-base titration laboratories are perennially offered to general chemistry students in preparation for summative assessments of their hands-on and quantitative skills in the field. Here, we present a guided inquiry-based activity focused on total titratable acidity (TTA) as alternative to standard "cookbook" titration laboratory work.…

The main aim of this study was to investigate the effect of inquiry-based laboratory instruction on ninth grade students' scientific inquiry views. In this study an argument driven inquiry approach to laboratory instruction was used to teach a Chemistry lesson where the nature of the aspects of scientific inquiry was explicitly taught. This…

An instructional approach is presented for teaching the mole concept to high school introductory-level chemistry classes. Extensions to the strategy are presented for more advanced classes. The strength of the approach is based upon discovery. Students discover the Avogadro number and the mole concept. The discovery is based upon calculations that…

At the core of an effective model-based inquiry (MBI) unit is a scientifically rich, complex phenomenon that serves as the reason for engagement and drives student sensemaking and investigations throughout the unit. Engaging in iterative attempts to explain phenomena over the course of an MBI unit allows the opportunity for students to construct…

This study aims to develop and validate a new instrument for measuring chemistry teachers' perceptions of Pedagogical Content Knowledge for teaching Chemistry Core Competencies (PCK_CCC) in the context of new Chinese chemistry curriculum reform. The five constructs and the initial 17 items in the new instrument were contextualized by the PCK…

Chemistry is essential to individual and societal well-being, yet publics tend to express less interest in chemistry compared to other science fields, and many scholars have highlighted the need for more research on effective chemistry communication and informal learning outcomes. Here, we describe one strand of a collaborative, multiyear study,…

How do different components of a learning environment contribute to learning in science? The study examines the contribution of laboratory experiments and computer model explorations to the learning of chemistry through a complex-systems approach. Specifically, junior high-school students' learning of chemistry via four different methods were…

This research revealed how the implementation of STEM Project-Based Learning (STEM PBL) in chemistry teaching on colloid system topics with heterogeneous groups of students in terms of habits, hobbies, goals, and gender-biased perceptions. Also, the research described students' attitudes towards STEM PBL, and the linkages between their attitude…

A study on the misconceptions developed or held by teachers related to the two terms valence and valency was undertaken. A total of 48 teachers (26 males and 22 females) teaching the chemistry component of science subject to 14-16-year-old students, in 48 schools affiliated to one district, were randomly selected for the study by taking one…

[superscript 1]H NMR spectroscopy is a molecular characterization technique that is ubiquitously used in research and teaching laboratories alike. Strategic deuteration of molecules is a commonly employed technique in the deconvolution of [superscript 1]H NMR signals. Here this approach is applied in a second-year chemistry course in which…

With the rapid growth in the manufacturing industry and increased urbanization, higher amounts of composite material waste are being produced, causing severe threats to the environment. These environmental concerns, coupled with the fact that undergraduate students typically have minimal experience in research, have initiated the need at the UAE…

This paper reports the findings of the second and the third year of a four year longitudinal empirical research into the modification of 'step-by-step' instructions to practical activities which require one or more steps to be designed by the students. This method had been successfully applied for a short period for 14-15 years old students.…

Content knowledge (CK), pedagogical content knowledge (PCK) and, assessment knowledge (AK) are fundamental types of teachers' knowledge. Second-career, pre-service chemistry teachers leave the industry and return to the Technion to study in the "Views" program to obtain a high school teaching certificate. Their background can potentially…

In recent years teachers' education programs encourage preservice teachers to practice a variety of assessment methods to prepare them to be highly qualified practitioners who are capable in enhancing students' scientific understanding. Formative assessment (FA) -- also known as assessment for learning -- involves the process of seeking and…

Active learning environments have been shown to be beneficial for student learning; however, including such activities can be limited by the class time available. One method that can provide more opportunities for active learning during face-to-face class time is the flipped learning approach. However, studies on the impacts of flipped learning…