Differential fixation to novel stimuli was obtained from 4-month-old infants to test the discrepancy hypothesis, which predicts a curvilinear relationship between degree of discrepancy and attention. (ST)

The development of the ability to associate numerals with sets of appropriate size was studied in children, ages 4 to 5-1/2. (ST)

This publication is a teacher participant handbook for an inservice minicourse in developing children's oral language skills, developed by the Far West Laboratory for Educational Research and Development. Four critical teachinq behaviors are stressed: (1) expand the complexity, flexibility, and preciseness of language and thought; (2) model new…

Mathematically analyzes the polarization of rainbows, a phenomenon which can be demonstrated in a laboratory simulation using polaroid sheets, perspex discs, and a white light source. (MLH)

Presents information about new apparatus, equipment, and literature. Equipment includes such things as an educational computer, computerized analyzer, gas chromatograph, and laboratory extruder. New literature includes catalogs and pamphlets presenting technical data and procedures in areas such as water analysis, titrimetric procedures and…

Article described a program in which children could involve themselves in activities of their choosing. (Author/RK)

Electrets, the electrical counterparts of magnets, are polarized dielectrics that are permanent on a scale of months. Describes procedures for making electrets out of plastic sheets like Mylar, for testing them and measuring their pole strengths, and for establishing necessary and sufficient demonstrations that they are not simply surface charged.…