Includes materials list and assembly instructions for a heated, shaking waterbath. (MKR)

Describes the construction of an effective plant incubator for classroom use using a five-gallon plastic bucket. (JRH)

Discusses safety issues in science, including: allergic reactions to peanuts used in experiments; explosions in lead/acid batteries; and inspection of pressure vessels, such as pressure cookers or model steam engines. (MKR)

A construction of a simple gas apparatus that can be made by students either in the laboratory or the classroom, is presented. The components needed to construct the apparatus are disposable polythene pipets and polypropene microcentrifuge tubes.

A detailed description of the synthesis of bis(1,2-dimethylimidazole)copper(I) hexafluorophosphate by using techniques in a glove box is presented. The results shows that the synthesis of the copper complex has a distinct color change indicating by-product oxidation by oxygen.

The construction of an amperometric biosensor for glucose analysis is described demonstrating that the analysis is easy to perform and the biosensor gives good analytical performance. This experiment helped the students to acquire problem-solving and teamwork skills, allowing them to reach a high level of independent and critical thought.

Calibration is a technique that is commonly used in science and engineering research that requires calibrating measurement tools for obtaining more accurate measurements. It is an important technique in various industries. In many situations, calibration is an application of linear regression, and is a good topic to be included when explaining and…

Described is a device that can be set up on a bench with inexpensive apparatus. The device performs in non-coherent white light according to the laws of geometrical optics. (RH)

Describes the Surplus Buying Agency, a British organization from which schools can obtain physics materials and equipment obtained from governmental and industrial sources. (MLH)

Presents some solutions to problems commonly encountered in maintaining a classroom aquarium: pH control, overfeeding, overcrowding of tank populations, incorrect temperature settings, faulty introduction of fish into the tank, and the buildup of too many nitrogenous wastes. (PB)