An awareness of negative effects of mind set is promoted, and ways to minimize harmful sets are suggested. Visual perception, Eistelung effect, and functional fixedness are discussed as categories of potentially negative mind sets, with several examples given of each. Fixation combinations are noted as well. (MP)

Describes two instructional activities to develop spatial imagery and the pupil's responses to these activities. Discusses how the classroom atmosphere contributed to the success of the activities. (YP)

Describes the Agam program, a 36-unit curriculum program to introduce students to basic visual concepts and that applies visual abilities and visual thinking to learning tasks. Describes two units at the third grade level, "Ratio and Proportion" and "Numerical Intuition," and makes observations of the students' learning. (MDH)