Advance organizers may fail to promote learning even though they are approximately related to the main learning experience and internally meaningful and logical. If they are to optimize the likelihood that new materials will be readily and properly subsumed, they must also be constructed to conform to the cognitive preparedness and scholastic…

This research study shows that it is possible to advance the use of proportional reasoning of many secondary school students by means of a well-designed teaching program. (MP)

Reports the results of a study that indicate that junior and senior high school science students are penalized (by receiving lower grades) for not being able to think at the formal operational level. Outlines some methods that may be used to facilitate growth in cognitive development of students. (JR)

Reviews the nature of the spiral approach in the teaching of mathematics and illustrates its use with an example of teaching place value by presenting eight different expressions of this concept. The spiral approach involves building an idea, concept or an algorithm at different times in different manners. (PR)

Some possible uses of math lab materials and activities that are natural and appropriate to the development of process skills are explored through a discussion of a geoboard activity. (MP)

The teacher of mathematics or science must be aware of the concepts, facts, and generalizations of his field, of psychological principles of learning, and of teaching methods. Methods appropriate to the teaching of concepts differ from methods for teaching generalizations. (SD)

Presents a developmental taxonomy which promotes sequencing activities to enhance the potential of matching these activities with learner needs and readiness, suggesting that the order commonly found in the classroom needs to be inverted. The proposed taxonomy (story, skill, and algorithm) involves problem-solving emphasis in the classroom. (JN)

This study explored questions about the effect of lesson structure and cognitive development on science achievement of 42 students in grades four and five in British Columbia. Increased lesson structure did not significantly increase achievement, and interaction effects were generally nonsignificant. Conservation ability significantly affected…

Discusses the role constructivist learning theory is taking in the change of teaching strategies in the science laboratory. The laboratory moves from a place where knowledge is verified to one where relationships are actively investigated through hands-on, cooperative activities. (MDH)

Student problem-solving behaviors are analyzed using a four-dimensional framework with related detrimental factors identified for each dimension. General approaches and specific techniques developed to address negative factors are reviewed. Examined are means of developing the components of problem-solving teaching. (KR)

Outlines the rationale, resources, and techniques for teaching K-12 physical science via toys. Includes 65 references and a list of 9 mail order suppliers of scientific toys. (MDH)

Discussed is an alternative teaching strategy to uncover and assess a common misconception in the life sciences and to articulate its use in teaching a unit on angiosperm reproduction. The learning cycle is described, and a concept map on reproduction on angiosperms is included. (KR)

Discusses Piaget's ideas and their influence on science class practices. Three elementary science programs are presented as teaching models based on Piaget's theory. New issues for teachers created as a result of the application of Piagetian ideas are discussed also. (HM)

The value of incorporating the haptic mode into the science curriculum and expanding "hands-on experience" to "total-body experience" are discussed. The pedagogical implications of the role of movement in cognitive development are described. (KR)

Described is a three-phase model for teaching problem solving to the middle school student. Phases include cue attendance, thinking aloud, and developing diagrams of steps to solutions. Because middle school students are in a transitional period in their cognitive processes, implementation of problem solving skills seems appropriate. (Author/DS)