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Design and results of an investigation attempting to analyze and improve children's solution processes in elementary addition and subtraction problems are described. As background for the study, a conceptual model was developed based on previous research. One dimension of the model relates to the characteristics of the tasks (numerical versus word…
Descriptors: Addition, Cognitive Development, Cognitive Processes, Educational Research
Noelting, Gerald – 1978
This study examined the development of the rational number concept as a ratio. Preliminary to the description of the study is an introduction discussing constructivism and equilibration. The study itself tests whether equilibration theory holds, and if so, what is the nature of its "phases" and whether these are found at each of the "periods" of…
Descriptors: Abstract Reasoning, Cognitive Development, Concept Formation, Developmental Stages
Peer reviewedNoonan, Richard; Wold, Herman – Scandinavian Journal of Educational Research, 1980
The specification and estimation of a partial least squares model is discussed in terms of assessing the magnitude of the effects of a variety of differences among Swedish schools on the cognitive and affective outcomes of lower secondary students in science. (Author/SB)
Descriptors: Achievement, Affective Behavior, Cognitive Development, Data Analysis
