The ability of students to perform quantitative analysis is a fundamental aspect of analytical chemistry courses and laboratories. In this laboratory experiment, students quantitatively analyze both liquid and solid samples through the use of internal standard calibration and ATR-FTIR spectroscopy. Using a problem-based approach to selecting their…

As educational accountability pressures and science teacher attrition rates within American public-school systems continue to rise, so does the need for improved reform-based professional development (PD) opportunities that allow science educators to challenge their pedagogical beliefs and teaching practices. This qualitative case study explores…

Circular dichroism (CD) is the differential absorption of left and right circularly polarized light. It arises from molecular electron oscillations that are driven by both the light's electric and magnetic fields, where the effects are in phase for one circular polarization and out of phase for the other. We describe these interactions, which have…

Anthocyanins are natural pigments belonging to the flavonoid family that generate the red, blue, and purple colors of fruits, vegetables, and flowers. Their structure and color are dependent on various factors, like the pH. Anthocyanins appear red in acidic, purple in neutral, and blue in basic solutions, making them suitable for use as natural pH…

Little is known about the integration of social-emotional learning (SEL) with science instruction. We used a sequential mixed-methods design to examine (1) how fourth graders use argumentation practices and social gestures in science class and (2) how argumentation practices and social gestures differ between intervention and comparison…

We provide a protocol for rapid DNA extraction from spiders suitable for undergraduate practical sessions. Students who were previously naïve to the theory and laboratory technique of DNA barcoding were successfully able to extract and recover 29 DNA sequences from 16 species of small spiders in the family Linyphiidae. We anticipate that with…

How can you switch from a hands-on face-to-face chemistry course to an online course in the face of a pandemic? It is possible to have students do hands-on experiments at home. There are many readily available kitchen, drug store, and garden chemicals that can be used to illustrate the same principles in standard chemistry curricula at multiple…

We compared 2014-15 New York State Science Assessment scores of fourth grade students who received the New York Sun Works (NYSW) Program (n = 638) with two comparison groups: students who received NYSW the following year (n = 993) and students attending matched schools (n = 1490). We first applied a multi-level regression model to compare scores…

The field of epigenetics is progressing rapidly and becoming indispensable to the study of fundamental gene regulation. Recent advances are redefining our understanding of core components that regulate gene expression during development and in human diseases. Scientific knowledge on the importance of epigenetic regulation is now well known and…

Principals are increasingly called upon to support effective instruction and student learning across content areas. Content and process standards emphasize the need for leadership that addresses teachers' pedagogical and content understandings. The purpose of this article is to conceptualize content-specific leadership in mathematics and science…

In this paper, an educational tool is proposed to show the internal photoelectric effect in a simple and clear way for Undergraduate Physics courses or High Schools. Experimental evidence of the photoelectric effect is particularly important in the didactic experience. This effect is fundamental to introduce students to the world of quantum…

Information and knowledge of science are very necessary and vital inputs for growth and survival in modern times. Science is a body of knowledge that can be rationally interpreted and applied consistently in human endeavors. Science as a form of information is a way to examine a process and a way of thinking in the quest for an understanding of…

A set of inexpensive and pedagogically rich experiments focusing on S[subscript N]1, E1, and E2 reactions have been updated to include modern computational and spectroscopic analyses. The S[subscript N]1 experiment involves treatment of "tert"-amyl alcohol with hydrochloric acid to generate the corresponding alkyl chloride, which is used…

School genetics is changing. Nowadays, students are more likely to be introduced to the idea that many characteristics of organisms, including those of humans, are not determined by the actions of just one or two genes but result from interactions between the products of many genes and the environments of each organism. This article asks whether…

An economy that grows is good. Growth in income is certainly good. In general, growth is seen as a good thing. A global pandemic challenges this notion. Let's be careful of what we wish for- especially if growth is "exponential." This article describes exponential growth and doubling time, and shows how these concepts can be related to…