The correct use of micropipettes has been investigated in an undergraduate, introductory lab experiment intended for chemistry and biology majors. This lab experiment involves the use of micropipettes for accurately mixing, transferring, and applying a specific amount of dye to a cotton bandana. The data resulting from this experiment is a color…

Though the term, "probeware" may not be a household word, it has grown more familiar to science educators over the past decade, as a new generation of high-tech instruments for collecting and analyzing data from the physical world have been introduced into school science labs. Today, those tools include digital scientific probes or sensors that…

For proper use of multiple-channel dictation equipment, consideration should be given to seating arrangement, observation techniques, "reading back procedures, practice speeds, transition from textbook copying, and classroom management procedures which facilitate learning. (CH)

Describes the construction and operation of an overhead projection apparatus designed to demonstrate streamline flow of a liquid. The apparatus consists of a Plexiglass tank containing water in which plates forming the cell are submerged, a constant level reservoir, an overflow device and a system for marking the flow lines with a dye. (LC)

THIS PAPER WHICH WAS PRESENTED AT A CONFERENCE ON THE PLANNING AND OPERATING OF LANGUAGE LABORATORIES DISCUSSES THE EQUIPMENT CONTENT OF THE LANGUAGE LABORATORY. DESCRIPTIONS OF THE VARIOUS ITEMS OF MECHANICO-ELECTRONIC EQUIPMENT WERE GIVEN UNDER THREE HEADINGS--(1) STIMULUS GEAR, COMPONENTS THAT PRESENT AUDITORY AND VISUAL MATERIALS, (2) RESPONSE…

Describes the construction and use of an inexpensive, vacuum furnace designed to produce F-centers in alkali halide crystals by additive coloration. The method described avoids corrosion or contamination during the coloration process. Examination of the resultant crystals is discussed and several experiments using additively colored crystals are…