This paper outlines a comprehensive teaching laboratory course program that centers on titration analysis, a timeless and essential technique in analytical chemistry spanning various disciplines, such as environmental science, medicine, and industry. In these fields, titration analysis is paramount for determining the concentrations of substances…

In this study, the Science Laboratory Applications (SLA) course given in a department of Elementary School Teaching in Turkey was evaluated for effectiveness. A triangulation research design, with mixed methods, was employed based on research data collected via a semi-structured interview form, a Science Experiments Evaluation Rubric (SEER)…

Volatile compounds from polymeric materials such as weatherstripping were identified by solid-phase microextraction (SPME), a solvent-free analytical method, coupled to gas chromatography-mass spectrometry (GC-MS). These compounds, originating from additives and fillers used in weatherstripping processing, were mostly polycyclic aromatic…

In a recent report, the American Association of Physics Teachers has developed an updated set of recommendations for curriculum of undergraduate physics labs. This document focuses on six major themes: constructing knowledge, modeling, designing experiments, developing technical and practical laboratory skills, analyzing and visualizing data, and…

Students sometimes have difficulty grasping the importance of when and how basic distillation techniques, column chromatography, TLC, and basic spectroscopy (IR and NMR) can be used to identify unknown compounds within a mixture. This two-part experiment uses mixtures of pleasant-smelling, readily available terpenoid compounds as unknowns to…

"Candida" spp. includes more than 160 species but only 20 species pose clinical problems. "C. albicans" and "C. parapsilosis" account for more than 75% of all the fungemias worldwide. In 1995 and 2005, one "C. albicans" and two "C. parapsilosis"-related species were described, respectively. Using…

Introducing research in undergraduate biology studies may contribute to creating research vocations and generate the idea that science may influence all aspects of common life. However, laboratory practices are too often disconnected from current investigations and rarely address real-life questions that are really interesting for students.…

Science anxiety, which is one of the affective dimensions in science learning, is one of the factors affecting success in Science and has been studied for 35 years. The existence of considerable negative attitudes towards Physics courses, which is one of the basic branches of Science, is a fact. This research has been designed to identify the…

A study of modern genetics requires students to successfully unite the principles of Mendelian genetics with the functions of DNA. Traditional means of teaching genetics are often successful in teaching Mendelian and molecular ideas but not in allowing students to see how the two subjects relate. The laboratory module presented here attempts to…

In an effort to achieve high success in knowledge and technique acquisition as a whole, a biochemistry and molecular biology experiment was established for high-grade biotechnology specialty students after they had studied essential theory and received proper technique training. The experiment was based on cloning and expression of alkaline…

I present a laboratory procedure for illustrating transcription, post-transcriptional modification, gene conservation, and comparative genetics for use in undergraduate biology education. Students are individually assigned genes in a targeted biochemical pathway, for which they design and test polymerase chain reaction (PCR) primers. In this…

Variations in science lab design can differentially impact student learning. Quantification of these differential impacts can be used in modeling--an approach we term "optimal lab design." In this study we estimated relative influences of six characteristics of lab design on students' attitudes toward science labs in three different…

More than 90% of vascular plants in terrestrial ecosystems form symbiotic root-fungal associations known as mycorrhiza; in Mediterranean biomes all known mycorrhizal types co-exist. However, the understanding of mycorrhizal diversity and structure and their ecophysiological impact in soil productivity and conservation has been shown to be very…

A study examined the relationship between the creative thinking of 114 13 to 14-year-old females and scientific problem-solving ability. The students did well in the "preliminary trialing" stage and were more proficient in "interpreting" and "performing" process skills. The other three components, "communication,""planning," and "reflecting,"…

Describes the development, preparation, and use of a medium that can select against a wide variety of Gram-negative bacteria while still allowing growth and differentiation of a wide range of Gram-positives. (WRM)