Abstract: The treadmill exercisers include uprights 16, 16a, a treadmill 15 and treadmill frame 17, 17a and a two part treadmill 15 made up of two rows of rollers 33 separated by roller supports 34 which form an exerciser section 26 and massager section 27.The rollers used in the treadmill preferably have a surface made of flat topped pyramids 46 formed by one or more spiral grooves 45 and substantially parallel longitudinal grooves 46. The preferred alternating rollers are preferably positioned so that the pyramids 46 are in a herringbone pattern.

Abstract: The invention is a game in which tiles are placed on a game surface to teach a discipline or area of study. The invention will be described in terms of a math game board although the principles taught can be used with many fields of study. The surface has a series of geometrical shapes presented to the player either simultaneously or serially. Each of the geometrical shapes has a plurality of discrete marked off "problem bases". Each of the problem bases have a series of symbols providing a problem. A symbol or symbols on the answer base answers the problem presented via the problem base. When the answer base of each tile having a symbol or symbols correctly answering the problems presented on each of the problem bases is correctly placed on the appropriate problem base, the tiles correctively duplicate each of the geometric shapes of the series.