Educational film guide ()

1949 EDITION 510-511 510 Mathematics INDIRECT MEASUREMENT. Knowledge Bldrs 1948 12min sd (Practical geometry ser) $40, rent $2 510 sh-c-tr Need for indirect measurement techniques is established by showing specific situations where direct measurements cannot be made. Film then demonstrates three methods of indirect measurement — congruent triangles, similar triangles and trigonometry 510.8 Slide rule SLIDE RULE (MULTIPLICATION AND DlVISION). Castle 1944 24min sd $35.89 510.8 c-tr-ad Guide Produced by the U.S. Office of Education. Accompanying films trip $1 Explains in detail the C and D scales of the slide rule, the parts and workings of the rule, and shows how to use these scales for multiplication, division, and combinations or these two operations SLIDE RULE (PERCENTAGE, PROPORTION, SQUARES AND SQUARE ROOTS). Castle 1944 21min sd $32.87 510.8 sh-c-tr-ad Guide Produced by the U.S. OfBce of Education. Accompanying fllmstrip $1 Shows how to use the B and C scales of the slide rule to calculate proportions and percentages; how to calculate squares and square roots; and how to determine placing of decimals after the square root is extracted. Simple problems are used to illustrate the methods 5 1 1 Arithmetic ADDITION IS EASY. Coronet 1949 lOmIn sd $45; also color $90 511 p-el-Jh Guide Collaborator: F. Lynwood Wren, professor of mathematics, George Peabody College f oi* TG£LchGrs What is addition? How Is It done? Billy needs to buy a set of paints but he wants to buy a baseball bat too. Has he enough money for both in his own little banli? This film lesson e.stablishes the basic concepts and demonstrates the methods of addition which are all important to a solid foundation for the study of mathematics BORROWING IN SUBTRACTION. TFC 1947 20min sd apply 511 el-Jh Guide Produced by World Today, Inc. as part of the experimental teaching film project conducted by the Motion Picture Association of America in cooperation with the American Council on Education A process of elementary arithmetic is brought alive with concrete symbols and a forty by thirty feet blackboard "A clear explanation of the process of borrowing in subtraction which, by its unique and dramatic effects, should have great appeal for children." Collaborator DECIMAL FRACTIONS. JohnsonHunt 1948 llmin sd (Fractions ser) $45; also color $85 511 el-Jh-sh Guide Presents, in animation, a simple, direct explanation of how decimal fractions are written and what they mean. Shows in detail their relationship to common fractions, but does not elaborate on how they are converted HOW TO ADD FRACTIONS. JohnsonHunt 1947 llmin sd (Fractions ser) $45; also color $85 511 el-Jh-sh Guide Reviews the definitions of a fraction, denominator and numerator. Shows how to add fractions with and without a common denominator. Familiar objects are animated "Purpose of film is to summarize and clarify concepts that teacher has presented in daily lessons. In dealing with a subject difficult to explain, the film has a freshness of approach that should appeal to the youngster, while handling the subject in a direct and simple style. It should also appeal to the teacher who has long awaited a film on this subject, and who uses the film as it Is intended." Film world HOW TO CHANGE FRACTIONS. Johnson Hunt 1947 llmin sd (Fractions ser) $45; also color $85 511 el-Jh-sh Guide Explains how to convert common fractions to equal common fractions having higher or lower terms. Goes into detail as to why the procedure results in an equal fraction and gives illustrated proofs HOW TO DIVIDE FRACTIONS. JohnsonHunt 1948 llmin sd (Fractions ser) $45; also color $86 511 el-Jh-sh Guide Shows how to divide by a fraction and then gives a detailed explanation of why, if you invert the divisor and multiply, you will have the correct answer HOW TO MULTIPLY FRACTIONS. Johnson Hunt 1947 llmin sd (Fractions ser) $45; also color $85 611 el-Jh-sh Guide Explains by animation the method used to multiply two common fractions and explains why this procedure gives the correct answer HOW TO SUBTRACT FRACTIONS. Johnson Hunt 1947 llmin sd (Fractions ser) $45; also color $85 511 el-Jh-sh Guide Shows how to subtract fractions with and without a common denominator, and also how to subtract fractions from whole and mixed numbers INTRODUCTION TO FRACTIONS. Johnson » Hunt 1947 llmin sd (Fractions ser) $45; also color $85 511 el-Jh-sh Guide The meaning and use of fractions are shown by animation "This excellent presentation, designed specifically for latter part of fifth grade [or for review in the sixth grade] should be equally effective for remedial work and review in higher grades. The film has a directness and simplicity of style that should add to its already effective manner of visualizing a difficult subject." Film world LET'S COUNT. Coronet 1948 lOmin sd $45; also color $90 511 p-el Guide Collaborator: F. Lynwood Wren, professor of mathematics, George Peabody College for TG9,ch€rs Tries to fill the gap between the haphazard counting of youngsters in the primary grades and their introduction to arithmetic. As students watch Sally and Joe, they see how useful counting can be. They learn the difference between ordinal and cardinal numbers and how easy it is to use tally marks and numerical symbols to answer the question "How many?" 371