Chromatography is the most common analytical technique able to identify and quantify a wide gamut of substances in food, environmental, forensic, pharmaceutical, and many other kinds of real samples. We propose a simple drama science activity: students embody different compounds wearing emblems of different colors and dramatize their…

This classroom-based study aims to contribute knowledge about children's opportunities to make use of drawing to make meaning in science. Employing a social semiotic approach to drawing, we examine what ways of representing science content that are: (1) made available by the teacher; and (2) adopted in children's drawings. We analysed observation…

The present study investigated if the argument-driven inquiry (ADI) model with embedded explicit-reflective teaching of NOSI improved pre-service science teachers' (PSTs) comprehension of the nature of scientific inquiry (NOSI). The study employed the qualitative experiment method with 16 PSTs. The PSTs working in small groups conducted seven ADI…

During the August 21, 2017, solar eclipse, high school students measured secondary cosmic ray flux using QuarkNet detectors. These students conducted experiments examining cosmic ray flux, shower, speed of muons, and muon lifetime using QuarkNet cosmic ray muon detectors (CRMDs). These detectors measure muon flux of momenta greater than ~2 GeV, a…

Learning endocrine physiology can be challenging. Some physiological concepts are abstract, making the process of learning more difficult for students. The comprehension of basic concepts, such as chemical hormone classification, is essential to understand the differences in synthesis, secretion, transport, and mechanism of action of hormones. To…

In this article, simple models of optical computing circuits (1 x 4 demultiplexer (DEMUX), 4 x 1 multiplexer (MUX), Boolean logic, and half-adder (HA)) are shown with mechanically controlled plane mirrors. Photographs of the proposed computational circuits are also shown. It is very useful for the school student to understand optical logic and…

Mosquitoes (Culicidae) are disease vectors, which are responsible for an estimated one million deaths per year. Female mosquitoes, which need blood for survival and reproduction, collect blood with a disease present from a host, and will transmit that disease from one host to another as it feeds on additional food sources. This continuous feeding…

We introduce biology to the artist's design tool, the storyboard. This versatile organizing and visualizing artistic platform is introduced into the biology classroom to aid in an inventive and focused discovery process. Almost all biological concepts are dynamic, and storyboards offer biology, lecture, wet and computational labs, flexibility,…

Non-formal science education provides an ever-growing network of different educational opportunities that makes it a valuable instrument to increase scientific education quality and to promote scientific literacy among students. This study analysed teachers' conceptions about the goals they set prior to participating in a crystal-growing…

Modeling is an important tool in science teaching and learning. Constructing a model instead of replicating one is more meaningful and better supports student learning than analyzing premade models (Firooznia 2015; Gouvea and Passmore 2017; Takemura and Kurabayashi 2014). Models include physical replications of a scientific phenomenon or analyzing…

Nowadays, students have digital skills that are much larger than any other student in the past. Traditional experiments in a real laboratory are still fundamental, however an increasing number of computers can be used to simulate experiments close to the experimental environment. This can be seen as a great advantage for science learning, as…

The purpose of this study was to improve preservice chemistry teachers' understanding of surface tension by using guided-inquiry activities. Ten preservice chemistry teachers participated in this study. Data were collected with open-ended questions on the effect of molecular weight, branching, and temperature on surface tension before and after…

Understanding experimental design (e.g. control of variable strategy or CVS) is foundational for scientific reasoning. Previous research has demonstrated that demonstrations with cognitive conflict (e.g. asking students to evaluate and explain different experimental designs) are effective in promoting children's scientific reasoning, however, the…

Preventing impairments in athletic performance is an important concept for students that are preparing for careers that involve working with athletes. Gaining hands on, laboratory-based experience in measuring exercise induced dehydration can help students understand how to help athletes prevent dehydration induced impairment in performance. This…

Shadows produced by sunlight reflected from convex surfaces can be very well defined. This article provides an explanation for this phenomenon as well as a demonstration/lab activity for students to investigate properties of shadows made from sunlight reflected by a curved surface.