Aids for Teaching Basic Concepts of Sensory Development, model 7-02250-00), is a handbook containing perceptual training activities for children who are blind or have low vision or multiple disabilities. This print handbook discusses sensory development concepts, and provides guidance for professionals on perceptual training activities. Hand skills are one of its principal topics. Introduced are various shapes and sizes: small, medium and large circle, similiar and different triangles, containers which hold various small items which produce different sounds when shaken. There also is information about how to build the appropriate item under discussion along with a one page summary of the purpose for which the item is constructed.