Bradley's kindergarten material and school aids. . under-standing of the questions which immediately pre-i sent themselves on beginning the study of color phenomena even in their simplest forms, nnd therotating disks form the only practical color mixersuited to those demonstrations which are necessary in the proper colorteaching of the present day. THE PRIMARY SCHOOL WHEEL. The Primary School Wheel is a well made ma-chine much smaller and lighter than the HighSchool Model, and more simple in primary and lower grammar grades this ma-chine is amply adequate for all required expe
Bradley's kindergarten material and school aids. . under-standing of the questions which immediately pre-i sent themselves on beginning the study of color phenomena even in their simplest forms, nnd therotating disks form the only practical color mixersuited to those demonstrations which are necessary in the proper colorteaching of the present day. THE PRIMARY SCHOOL WHEEL. The Primary School Wheel is a well made ma-chine much smaller and lighter than the HighSchool Model, and more simple in primary and lower grammar grades this ma-chine is amply adequate for all required experi-ments. The price at which this wheel is offeredbrings it within the reach of every school districtor teacher and does away with the objection sooften heard that such pieces of apparatus are toocostly for common use. The teacher who hasnever tried color experiments with these wheels,even in the primary grades, can have but little ideaof the interest which they awaken among the children or of the practicalinstruction in color which they
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcolor, bookyear1896
