Educational screen & audio-visual guide (c1956-1971])

CLEAN YOUR FILMS IHESMFEWMf THIS SUMMER ■n the recent hI^k*'"'^' ^'^'^^or editor. Ponolw'.t°^ "^ ^"" the National ^^Z*"' ''•^^«'^>'. B.-adcasrEXee°Tnd T l' "■cmns has launched a Jf''" "lined drivB f^ l ^ deter "Sing it bpffZ ■ " y°" re Switch to NON-TOXIC ECCO ^1500 Antistatic film Cleaner • Cleans Better, Dries Faster Than Carbon Tet • Cleans, Conditions, Lubricates Film In One Operation • Non-Poisonous — Non-Flammable • Stops Dirt-Attracting Static • Fast-Oryjng • Conditions "Green" Prints, Kine Films • Keeps Films Pliable, Eliminates Waxing • Fewer Cleanings Needed • Absolutely Safe for Film, Personnel Don't risk the health of your personnel — stop cleaning film with deadly carbon tet! Start using ECCO #1500, the anti-static film cleaner that contains no poisonous carbon tet . . . cleans, conditions and lubricates in one application ! ECCO #1500 is the film cleaner used in most audio-visual centers, film libraries, schools and colleges. And ECCO #1500 is used by many Hollywood film studios and TV networks — NBC, CBS. Discover for yourself that it pays to clean film as the industry's leaders do — with ECCO #1500. CLEAN AND INSPECT FILM S ONE EASY OPERATION with ^2PeePR0L ECCO APPLICAYOR Save Time, Fluid, Labor, Money! WRITE today /or fMl fCCO "1500 brochure. OROEII (CCO * 1 500 from your deo/or.or diracf. •Notional Audio-Viiuol Association Bulletin, October, 1956 ELECTRO-CHEMICAL PRODUCTS CORP. 60-E Franklin Street, East Orange, N. J. 108 EDUCATIONAL Founded in 1922 by Nelson L. Greene & AUDIO-VISUAL GUIDE March, 1958 Volume 37, Number 3, Whole Number 361 IN THIS ISSUE C^clllc tonal 122 POINTING SOUTH .Article rttcCei 123 COURSE IN FIELD PHOTOGRAPHY — Alvin B. Roberts 1 26 PHYSICS FILM COURSE — Carlton Smith I 29 MOVABLE, SELF-CONTAINED REAR PROJECTION — Craig Fullerton and John Roberts 130 EFFECTIVE FLANNEL BOARDS — E. Milton Grassell 1 32 TERRESTRIAL GLOBE FOR EDUCATION — Carl H. Mapes 1 34 NOTES ON DAVI'S ANCESTRY — William F. Kruse lb. ;io 112 1 14 136 139 140 142 144 147 b 'eparinien ON THE SCREEN THE READER'S RIGHT — Letters to the Editor HAVE YOU HEARD? — News about People, Organizations, Events EVALUATION OF NEW FILMS — L. C. Larson, Carolyn Guss, John Fritz LOOKING AT THE LITERATURE NEW FILMSTRIPS — Robert Church, Walter Pilditch, Harold Ward SOUND ADVICE — About Audio Materials and Equipment Max U. Bildersee CHURCH DEPARTMENT — William S. Hockman AUDIO-VISUAL TRADE REVIEW Kyi her ^ecilurei 142 AUDIO DIRECTORY 146 HELPFUL BOOKS 154 INDEX TO ADVERTISERS Inside Back Cover — TRADE DIRECTORY FOR THE AUDIO-VISUAL FIELD Iducational IRESS iSOCIATION OF ^AMERICA MEMBia NATIOKil AUDIO-i visH*;CfA\ BUSINESS & EDITORIAL ADDRESS: EDUCATIONAL SCREEN & AUDIO-VISUAL GUIDE, 2000 Lincoln Park West BIdg., Chicago 14, Illinois. Contents indexed in the Wilson Educotional Index. For microfilm volumes, v^rite University Microfilms, Ann Arbor, Michigan. SUBSCRIPTION PRICE (U.S. currency or equivalent): Domestic — $4 one year, $6.50 two veors. S8 three years. Conadion and Pan-American — 50 cents extra per year. Other foreign— $1 extra per year. Single copy — 45 cents. Special August Blue Book issue — $1.00. CHANGE OF ADDRESS stiould be sent immediately to insure uninterrupted delivery o< your magazine. Allow five weeks for change to become effective. EDUCATIONAL SCREEN & AUDIO-VISUAL GUIDE is published monthly except August by The Educationol Screen, Inc. Publicotion office, Borrington, Illinois; Business and Editorial Office, 2000 Lincoln Park West, Chicago 14, Illinois. Printed in the U.S.A. Re-entered as second-class matter October, 1953 at the post office at Barrington, Illinois, under the Act of March 3, 1879. ENTIRE ISSUE COPYRIGHT 1958 BY THE EDUCATIONAL SCREEN, INC. EdScreen & AV Guide — March, 1958 i