Thirty-seven blind students (in grades 2, 3, and 4) were involved in a study to evaluate the tactile ruler familiarization unit (three vacuum-formed plastic sheets illustrating English, Metric, and English-Metric measurement units). (SBH)

Evaluated was whether primary level visually handicapped tactile learners could successfully manipulate and discriminate the component parts of an instructional aid to introduce fractional parts of wholes. (DB)

A study was conducted to determine if 61 visually handicapped students in grades 2-4 could discriminate the textures appearing on a cell model, could locate and identify the cross-sectional cell layers, and could manipulate the pull-apart features of the cell model. (SB)

A study was conducted to evaluate the effectiveness of three-dimensional plastic models in teaching 71 visually handicapped students (in grades 1-3) to discriminate major body parts of insects, spiders, and earthworms. (SBH)