Describes a study which was designed to determine the effect of a 25-hour introductory qualitative analysis course on high school students' understanding of formal concepts related to electrolytes. Suggests that introductory concrete experiences better prepare students to deal with more formal abstract concepts. (TW)

The purpose of this publication is to help teachers identify the levels which children have attained in their thinking as they express their attitudes, values, and behaviors through oral language. Provided are (1) sample questions applicable to various maturity levels to enable teachers to gauge the level of difficulty of their classroom…

A review of Piaget's theory and research on children's cognitive development is presented, including a discussion of the psychological structures of intelligence, developmental constructivism, and the evolution of knowledge as a subject-object relation. Piaget's assessment techniques are summarized, including moral development, number…