Many governors have launched initiatives to raise student proficiency in math and science and encourage youth to pursue careers in STEM fields (i.e., science, technology, engineering, and math). Individuals with strong STEM skills play vital roles in technological innovation and economic growth and are rewarded with more secure jobs and higher…

Development of a scientifically literate citizenry has become a national focus and highlights the need for K-12 students to develop a solid foundation of scientific reasoning abilities and an understanding of nature of science, along with appropriate content knowledge. This implies that teachers must also be competent in these areas; but…

This paper presents low-cost experiments for a control systems laboratory module that is worth one and a third credits. The experiments are organized around the microcontroller-based control of a permanent magnet dc motor. The experimental setups were built in-house. Except for the operating system, the software used is primarily freeware or free…

The website "Earthlearningidea" was developed for the International Year of Planet Earth in 2007 and continues with one new activity per fortnight. Activities are devised to catch the attention of students and to enable them to enjoy the science of the Earth. Many activities require minimal equipment, for schools in developing countries, but there…

The use of kits in elementary science classes is a growing trend in some countries. Kits provide materials and inquiry lessons in a ready-to-teach format for teachers to use in their science instruction. This study examined elementary teachers' instructional strategies, classroom practices, and assessment types in relation to the frequency of…

The purpose of this study was to investigate how WebQuests can be used in physics classes for teaching specific concepts. The study had three stages. The first stage was to develop a WebQuest on Newton's second law. The second stage involved developing a lesson plan to implement the WebQuest in class. In the final stage, the WebQuest was…

The pedagogical value of having biochemistry and organic chemistry students build and manipulate physical models of chemical species is well established in the literature. Nevertheless, for the most part, the use of molecular models is generally limited to several laboratory exercises or to demonstrations in the classroom setting. A simple…

A new curricular approach in our undergraduate second-year instrumental analysis laboratory was implemented. Students work collaboratively on scenarios in diverse fields including pharmaceuticals, forensics, gemology, art conservation, and environmental chemistry. Each laboratory section (approximately 12 students) is divided into three groups…

In this article, the underlying logic of experimentation is exemplified within the context of a photoelectrical experiment for students taking a high school engineering, technology, or chemistry class. Students assume the role of photochemists as they plan, fabricate, and experiment with a solar cell made of copper and an aqueous solution of…

From effective learning research, there is a general consensus that hands-on experiences help students to learn. The question that this paper seeks to answer is what it is about these activities that fosters student learning. In a review of the literature, three factors have been identified as making a significant contribution to this strategy's…

Digital photography energizes students and focuses their attention on their environment. The personal connection to science helps students develop a habit of mind in which everything they see inside or outside of school can prompt them to wonder and investigate. This article describes how first graders explore their school grounds with cameras in…

The near-UV spectrum of benzene is used to illustrate the effects of variations in instrument spectral bandwidth on absorbance and molar absorptivity measurements and on the independence of values of quantities such as the oscillator strength that are based on integrated absorptivity. Excel-based computer simulations are provided that help develop…

Alcohol-based hand-rub sanitizers are the types of products that hospital professionals use very often. These sanitizers can be classified into two major groups: those that contain a large quantity of thickener, and thus are a gel, and those that contain a small quantity of thickener, and thus remain a liquid. In an effort to create a laboratory…

Although science is a creative endeavor (NRC 1996, p. 46), many students think they are not encouraged--or even allowed--to be creative in the laboratory. When students think there is only one correct way to do a lab, their creativity is inhibited. Park and Seung (2008) argue for the importance of creativity in science classrooms and for the…

"I've never heard of a small speck of dust that is able to yell" says Horton of a sound he hears well (Geisel 1954). It is always valuable to connect science to student's interests and their everyday world--so what better way to teach concepts relating to sound than to read "Horton Hears a Who" by Dr. Seuss? Here the authors present several…