cture be- fore him. This assortment of cardboard ob- jects comprises thirty different sheets, These sheets are sold by the dozen and should always be ordered by the numbers given in the above cut. If, for example, a sheet of ten lamps is wanted, the number 14 must be given in the order. Price, per… … by simple observations of the sun, and also the different devices subse- quently invented for the same purpose, which will ser^-e as a text for various instructive talks by the teacher. The child's clock dial has a face four and a lialf inches in diameter, on thick cardboard, with movable steel…
Schools -- Furniture, equipment, etc. · Teaching Aids and devices
Internet Archive · Winterthur Museum Library · Public domain (published before 1931). Free to use for anything.
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