Chemistry teaching learning is considered as difficult and boring. The definition of play, based on authors such as Freud, Piaget and Vigotsky, is presented as a stimulating, pleasant and voluntary activity that in the student facilitates his learning and encompasses the different facets of his physical, psychic, social and emotional development.…

In this new edition of their groundbreaking book "Strategies That Work," Stephanie Harvey and Anne Goudvis share the work and thinking they've done since the second edition came out a decade ago and offer new perspectives on how to explicitly teach thinking strategies so that students become engaged, thoughtful, independent readers.…

Outlines teaching methods that emphasize the use of the right hemisphere of the brain. Argues that most productive thinking requires both modes of thinking and that any good elementary science program should include activities designed to develop both modes. (Author/IRT)

Describes a method of designing educational technology that is strongly informed by empirical studies of how students actually understand and use technology. Discusses what students need to know about software. (Author/CCM)

Uses different illustrations with simple line drawings in the word "QUIZ" as clues for students prior to taking tests. (YDS)

Introduces a teaching instrument called The Big Picture which is a student-generated overview of a unit. Provides a chart of units and summaries for The Big Picture. (YDS)

Describes a procedure for teaching the "generator orbital" (GO) approach of molecular orbital bonding in polyatomic molecules. Explains how the GO can be utilized with students in generating the vibrational, rotational, and translational modes of molecules in a completely pictorial manner. (ML)

Describes Wavemaker, a simulation environment developed to graphically reveal the behavior of periodic systems using a series of increasingly sophisticated visual tools. Results indicate that the software is helpful in connecting real to simulated systems. (Author/CCM)

Describes strategies that use trade books to teach science to primary students. Strategies include (1) developing concepts and vocabulary; (2) using concrete manipulatives to reinforce learning; (3) encouraging retelling; (4) developing class summaries; and (5) developing visual imagery. (MDH)

A proposition that 3-D CAD provides an array of unambiguous solutions to engineering problems is illustrated. This proposition assumes that engineering problems are conceived in parallel processing mode while they are solved in sequential processing mode. Circle construction analysis, parallel equidistant planes, and solid modeling are discussed.…

An approach to reduce the barrier between two-dimensional computer-aided drafting and three-dimensional constructive solids modeling is graphically illustrated. This process, or some derivative, encompasses a significant portion of the future direction for engineering graphics education. (KR)

The existing methods for graphically illustrating projection and coordinate systems for manual and computer-aided drafting and design are examined. Inconsistencies in methods used to graphically depict first and third angle projection in texts and the lack of attention in the relationship of projection to coordinate systems are noted. (KR)

An algorithm is described for generating smooth curves of first-order continuity. The algorithm is composed of several cubic Bezier curves joined together at the user defined control points. Introduced is a tension control parameter which can be set thus providing additional flexibility in the design of free-form curves. (KR)

Presented is a proposed formula for determining the bearing angle and the slope angle for the line of intersection using the strike and dip angles of two given plane segments. Included is the development of the formula and three example problems. (KR)

Two graphics interface packages, PHIGS and HOOPS, are examined. A comparison of the two packages is made in light of the Iowa State University College of Engineering's need for educational software. Conclusions based on programing experience using both PHIGS and HOOPS are presented. (KR)