Dyes aren't just for fabrics--colorants have been added to food for centuries to enhance its appearance. This monograph and teaching guide investigates both the compounds that give foods their natural color and synthetic colorants currently approved for use in foods. Problem-solving inquiry based activities involve high school level students in…

Repeated measures experimental designs, often referred to as "within-subjects" designs, offer researchers opportunities to study research effects while "controlling" for subjects. These designs offer greater statistical power relative to sample size. However, threats to internal validity such as carryover or practice effects…

Article investigated the influence upon children's behavior of television programs that feature violence. (RK)

Article outlined some fundamental requirements that must be fulfilled by programmes of teacher education so that teachers can become facilitators of lifelong learning and reported on an experimental project that will test some of the hypotheses generated in this connection. (Author/RK)

Author described an experiment in alternative schooling at Conisbrough. (Editor/RK)

Describes an experiment that allows the students to verify the assumption that light travels in straight lines. (GS)

Described a program of bilingual learning that included different races of students and a goal directed toward hurdling built-in cultural advantages or handicaps. (Author/RK)

The probability of experiment-wise error is explored. Overall, the experiment-wise error rate is directly related to the test-wise error rate--the alpha level set by researchers to curtail the existence of a Type I error. A Type I error occurs when a true null hypothesis is rejected in a given study or experiment. The experiment-wise error rate is…

The background ideas and practical implementation that led to the use of a computer terminal in a physical chemistry laboratory are described. Outlines of two of the lab experiments being used in the program are included. (DT)

The role of spectral color slides in laboratory situations is discussed, then experiments for secondary school students concerning color and wave length, evidence of quantization, and the ionization energy of the hydrogen atom are outlined. Teaching guidelines for creating a set of spectrograms and photographic specifications are provided. (DT)