Some activities are provided to help students develop a conceptual understanding of perimeter, area, and volume, as well as developing skills in spatial visualization and formulating generalizations. (MNS)

Examines 3-month-old infants' perception of "camouflaged" forms that were only visible when moving. Shows infants effectively use kinetic information to organize visual input in higher-order structures. (HOD)

Second and third graders and fifth and sixth graders were tested in a very large, unfamiliar environment to determine the relation of their knowledge of an abstract reference frame to performance on a spatial inference task. (HOD)

Three experiments with observers aged 6 to 21 years of age examined the integration of shape information over successive glances. Results indicated age-related improvements in the sequential integration of shape information, both when integration occurs through successive glimpses over space and when information is separated only in time. (HOD)

The evidence suggests that students in grades 5 through 8 have difficulty relating isometric type drawings to the rectangular solids they represent. Errors made by students were analyzed and the effect of instruction in spatial visualization activities assessed. (MNS)

The relationship between eight skills and one concept used on maps and their companion spatial abilities in mathematics are presented and discussed: symbols, perspective, location, direction, distance, relief, elevation, scale, and territoriality. (MNS)

Thirty-four third graders matched 14 foldout shapes (nets) with seven polyhedra. They had more success associating nets containing triangular regions than nets with only rectangular regions. It was easier to identify nets of pyramids and of a triangular prism when the lateral faces were distributed around the bases. (MNS)

Reanalyzes data from a study in which 42 fifth graders received training in map-drawing skills. Explores the relationship between the mixture of reasoning levels and developmental change, and compares findings with those of an earlier study of social reasoning. (CB)

Five-, five-and-a-half-, and seven-month-old infants were tested for sensitivity to relative size as distance information. Infants viewed two equidistant, different-sized objects presented side by side and reaching was used as dependent measure. Findings revealing five-and-a-half- and seven- but not five-month-olds were sensitive to relative size…

Studies the language and visuo-spatial skills of preschool children with past histories of lead poisoning. Suggests that specific behavioral sequelae exhibited by such children may be predicted by the factor of their age at the time of lead ingestion. (AS)

Results of two studies suggested that acquisition of route mapping during the preschool years provides a means of organizing spatial information and internal representations necessary for successful problem solving in general. (Author/RH)

The mastery of the reasoning skills of observation, classification, serialization, and spatial relationships is not solely within the province of social studies but also falls heavily upon students' acquisition of concepts, skills, and operations in mathematics. Each of these skills, as they relate to social studies and math, is discussed. (RM)

Good readers performed better than poor readers on temporal order retention tests as expected, but contrary to expectation, also maintained their superiority on the spatial tasks. However, error pattern differences supported earlier evidence linking poor readers' short-term memory deficiencies to reduced effectiveness of phonetic representation.…

The properties of the cube are explored. A set of activities is given that forms the basis of a class project on discovery. (MNS)

Second- and fourth-grade children viewed a cylindrical object in nine positions and identified the 90- , 180- , or 270-degree positions from a set of photographs. Perspectives in which the object differed from the child's view in both left-right and near-far dimensions were more difficult than perspectives that only transformed one dimension.…