The Educational screen (c1922-c1956])
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Page 168 The Educational Screen ON 76MM AT LAST! f t G. W. PABSTS KAMERADSCHAFT > J (COMRADESHIP) THE EPIC STORY OF FRENCH AND GERMAN "MEN OF GOOD WILL." A VITAL CONTRIBUTION TO PEACE AND SOUND INT'L RELATIONS. French and German Dialog English Super-Imposed Tiiles For Rent and Lease Wrife for FUEE "Cheek-Ust" GARRISON FILMS 1600 BROADWAY NEW YORK CITY CI'RREXT EVKNTS OX YOUR SCHOOL SCREEN: "War in Europe" "Finland Fights" "Why Hitler?" "Women of Poland" MANY OTHERS - ]6mm SILENT Wiite for either IGiniii Nound or silent li§t. LEWIS FILM SERVICE. lOS East First street Wichita, Kansas General Science, 11 rolls, $20 Principles of Physics, 7 rolls, $12 Principles of Chemistry, 8 rolls, $14 Fundamentals of Biology, 4 rolls, $9 Order on approval or send for free folder and sample VISUAL SCIEIVCES, Suffem, New York 35 FILM SLIDES Five Child Health, Training and Character Building Films. The life cycle of an entire generation is spanned in this series. 16 mm silent or sound; 8 mm silent. Titles are: BEFORE B.*By COME.S; BABY'S FIKST TE.4B - GBOWTNG UP - THE LIFE OF A HEALTHY CHILD - THE ROAD TO HPJALTH .'VND HAPPINESS. Educational ■ Entertaining - Authentic For Sale or Rent — For full information writ*: DR. DAVID B. HILL, Salem, Oregon; Producer ^TALK from your screen WITH your quickly TYPEWRITTEN MESSAGES 50 RADIO-MATS $1.50 White, Amber or Gre( ^Accept no substitute. IS THE SiaiioNERT OF THE Screen MAKE YOUR OWN TYPEWRITER SLIDES For Screen Projection USE RADIO MATS on sale by Theatre Supply Dealer* Write for Free Sample RADIO-MAT SLIDE CO., Inc. 1819 Broadway. Dept. V, New York City ' REEL 16 mm. S.O.F. HIGHLIGHTS OF LINCOLN'S CAREER Available Only to Educational Imtitutions Price: $45.—net Also other 16 mm—8 mm Films For Information Write to I^U-ART FILMS, I]\C. 'N1,l^«^.'•"N. ": SOUND AND SILENT CLASSROOM FILMS Write Dept. E-8 for Free Catalogs BAILEY FILM SERVICE 1651 Cosmo St. Hollywood, Calif. laths together, marking off a quadrant of a circle and attaching it to the lath assembly, or by using a protrac- tor to measure the angle of elevation of one arm after sighting at the north star. To use the calculator, rest one of the two laths on a surface parallel to the earth's surface, then sight along the other arm and elevate it until it is in line with the north star. Measure the angle of elevation, and this will be the same as the latitude of the place, or the number of degrees from the equator. Hence it is easy for the pupils themselves to measure the latitude of their particular locality. They can know without "remembering what the book says". Some other things which might be constructed are: a sun dial, a universal sun dial, refraction and reflection of light apparatus, astrolabe, falling body apparatus, illuminated planetarium, a telescope, hour glass, equa- tion of time device, barometer, star charts, zodiac chart, star finder, precession of the equinox apparatus, eclipse of sun and of moon, angle of sun's rays apparatus, dav and night device, season indicator. Construction work combined with the use of com- mercially made apparatus and personal observations should result in more meaningful instruction than mei-e verbal treatment of the subject. Children should not be denied these worthwhile experiences in their educational advancement. W. E. Selecting Projection Equipment {Concluded from page 142) who is to operate the machine to thread and run all of the projectors in order to better understand the equipment and have a better basis of comparison. If i it is a sound projector that is under consideration, check upon these items: Portability, ease of setting up, sound reproduction, tone control, accessibility of work- ing parts, ease of cleaning, wattage of amplifier, type of speaker, whether easy or hard on films, gadgets, etc. In general, the simpler the machine, the less trouble a . person will have. In small schools the demonstration i of several projectors may be impossible, but with the': cooperation of the countv superintendent of schools, several small schools may join in the project and f secure such demonstrations. Practically every good ma- chine has certain features which are unique. When these are studied at the same time, the particular features which make one machine better than another for your school are determined. ^Vhat makes one ma- chine best for one school does not necessarily make ii best for another. Beware of gadgets which will not function satisfactorily in the classroom, and are nut needed if they do function well. Demonstrations clear up these difficulties. In addition to these specific cautions, mav we add a few general suggestions! Dealing with an t'stablishcd business firm is far more satisfactor\- tlian dealing with itinerant salesmen, or with some local man who may have the privilege of ordering a projector for you at wholesale prices, but who knows nothing about the equipment and can offer no help when difficulties arise. Itinerant salesmen who represent a company in a dis- tant state may offer big things but usually there is nti