The first part of this research study examines how elementary students discover and understand certain relationships in nature. The second part investigates how pupils operate with overlapping concepts. (Author/RM)

Describes the results of comparative study of Russian elementary students' learning of spelling under an experimental didactic system and under traditional methods. Findings confirmed the hypothesis that sophistication in spelling depends on the overall development of pupils. (Author/RM)

Presents a summative evaluation of the Star Games, a participatory astronomy exhibit designed for public and school group visitors from age 13 to adult. Provides information about the effect of the exhibit on visitors and the attainment of its educational goals. (HM)

This experiment on teacher effectiveness focuses on the causal effects of teacher behavior within the classroom recitation. Each of four teachers used one of eight treatments in teaching an ecology course to eight sixth-grade groups. The treatments differed at two levels of teacher structuring, soliciting, and reacting. High structuring consisted…

Optimization procedures for a computer-assisted instruction (CAI) system were developed using iterative development and tests of a series of instructional decision models (IDM). The result was a total systems effort in which the instruction was carried on by a dialogue between a computerized tutor and the student. A profile of the student, student…

Students enrolled in an organic chemistry course were given a diagnostic inventory according to the SCRAPE model. Information was obtained on 11 motivational personality variable and three attitudinal variables for students in both computer-based instruction and regular instruction sections. Descriptive statistics were obtained on each instrument…