Abstract: A program, method and materials for enhancing creative thinking, communication, decision-making and strategic planning. The program materials and method are based on the interplay between physical manipulation of symbolic objects and the effect of such manipulation on the ability to deal with actual objectives. For example, by physically manipulating building blocks, such as those having a stud configuration, (such as those sold under the LEGO® trademark), which are fastened together with studs from a top of one block fitting into receptacles on the bottom of another block, the thinking processes can be fostered and/or enhanced.

Abstract: A wheelchair seat back having width adjustable wings, a mechanism to permit forward and backward angular adjustment of the wheelchair seat back, a clamping assembly for mounting the wheelchair seat back to wheelchair uprights, and a width adjustable cushion for a width adjustable wheelchair seat back.

Abstract: A lightweight wheel assembly intended primarily for use on wheelchairs including an injection-moldable fiber-reinforced plastic push rim, injection-moldable fiber-reinforced plastic wedge-bottom spokes, and a lockable static in-hub brake. Important advantages of the invention include very light weight compared to prior art wheel assemblies while achieving the high component strength desired, shock absorption qualities beneficial to wheelchair users not provided by other wheel assemblies, a convenient and easy-to-operate positive-engaging static brake, and components which may be made from the inexpensive injection molding process.