The Educational screen (c1922-c1956])

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February, 193 S Page 55 Sole the very large periodical being used without mutilation. Why Visual Teaching with a Spencer Coinbination Delineascope sores money — improves grades — reduces failures While reading a magazine a teacher recently discovered 12 new and unusual illustrations on the very subject she planned teaching the follow- ing day. How could the entire class see these pictures while she explained them? \X ould the newsstand have enough copies? Possibly, but that seemed like an unnecessarv expense. Could she borrow an opaque projec- tor? Luckily she was able to and projected the pictures clearly on a large screen. The subject was presented more vividly. Pu- pils displayed unusual interest and attention. An examination on the subject produced unusually high grades. The illustrative material immediately avail- able without cost in school libraries, newspapers, current periodicals and books is unlimited. And a Spencer Combination Delineascope is the eco- nomical equipment to buy because it projects both opaque materials and glass slides—virtually two instruments in one. Write Dept. B12 lor a valuable booklet on Spencer Drlineascopes. Spencer Lens Company MICROSCOPES MICROTOMES PHOTOMICROGRAPHIC EQUIPMENT REFRACTOMETERS COLORIMETERS SPECTROMETERS PROJECTORS SPENCER LNSTRL.\!ENTS WILL BE DEMONSTRATED IN BOOTHS EM2-44, N.E_\. CONVENTION, .ATLANTIC CITi. FEB. 26th TO MAR. 3rd.