A new design for experiments in the general chemistry laboratory incorporates a "do-it-yourself" component for students. In this design, students perform proven experiments to gain experience with techniques for about two-thirds of a laboratory session and then spend the last part in the do-it-yourself component, applying the techniques to an…

A graphical method for determining the 5-day biochemical oxygen demand (BOD5) for a body of water is described. In this bioassay, students collect a sample of water from a designated site, transport it to the laboratory, and evaluate the amount of oxygen consumed by naturally occurring bacteria during a 5-day incubation period. An accuracy check,…

Anatomical fixation and conservation are required to prevent specimens from undergoing autolysis and decomposition. While fixation is the primary arrest of the structures responsible for autolysis and decomposition, conservation preserves the state of fixation. Although commonly used, formaldehyde has been classified as carcinogenic to humans. For…

There have been great changes in the numbers of students studying psychology at degree level in the UK since 1961--the year the author graduated. And, similarly there have been great changes in what is taught--with an ever-widening set of theoretical developments and practical applications. Nonetheless, despite these developments, the author…

This note describes how to theoretically calculate and experimentally measure the moment of inertia of a Ping-Pong[R] ball. The theoretical calculation results are in good agreement with the experimental measurements that can be reproduced in an introductory physics laboratory.

The Shack interferometer is a simple and effective device to test optical surfaces in reflection and optical systems in transmission. An essential setup on a reduced scale with a minimum number of components is presented, suited to gain familiarity and practice with optical testing in a laboratory course for undergraduate students. The basic…

A multistep synthesis of 5-isopropyl-1,3-cyclohexanedione is carried out from three commodity chemicals. The sequence involves an aldol condensation, Dieckmann-type annulation, ester hydrolysis, and decarboxylation. No purification is required until after the final step, at which point gravity column chromatography provides the desired product in…

The well-known experiment of the rapid expansion and cooling of the air contained in a bottle is performed with a rapidly responsive, yet very cheap thermometer. The adiabatic, low temperature limit is approached quite closely and measured with our apparatus. A straightforward theoretical model for this process is also presented and discussed.…

In 2008, the Family and Consumer Sciences Department at Bradley University recognized the need to improve the quality of the laboratory experience in foodservice classes. A hands-on, real-world, learning experience was desired. Simultaneously, the university administration wanted to provide an on-campus foodservice for students from 8:00 p.m. to…

In the present article, we demonstrate the utility of Open Badge certifications in documenting ESP, EAP and EMI courses. Open Badges are online records of achievement which document field-specific, soft and technical skills. They consist of a visual image and a set of embedded metadata, they are endorsed by the institution which issues them and…

Aim of this study is to investigate students' ideas on cooperative learning method. For that purpose students who are studying at elementary science education program are distributed into two groups through an experimental design. Factors threaten the internal validity are either eliminated or reduced to minimum value. Data analysis is done…

Herein, we describe an effective and tested model of a week-long summer science intensive program for high school students that aimed to elaborate on concepts covered in a high school chemistry or biology course, and to provide high school students an opportunity to learn about studying and pursuing careers in the sciences. The program was…

Underprepared students often need assistance building writing skills and maintaining confidence in their abilities and potential. The authors share the philosophy, pedagogy, and experience of freshman developmental education and the writing center at a four-year, private, not-for-profit urban college. They describe high-impact educational…

This paper is aimed at giving a clearer picture of the power gap that exists between a group of Filipino students and their teachers in a laboratory school in a state university in the Philippines. This study emerged from the assumption that power distance between Filipino students and their teachers could help explain the level of their ability…

The current research is a descriptive study in which a survey model was used. The research involved chemistry (n = 26), physics (n = 27), and biology (n = 29) teachers working in Science High Schools and Anatolian High Schools in Turkey. An inventory that consisted of seven questions was designed to ascertain what teachers' think about the…