Primary Math, a series of 30 film loops: Number Meanings—Zero to Ten; Counting from Zero to Ten and Back Again; Zero to Ten by Two's and Five's; Counting to One Hundred by Two's; Counting to One Hundred by Five's; One-Half; One-Third; One-Fourth; Ordinal Numbers; Telling Time; Long, Longer, Longest; How Much?; Weight is Not ...; Measuring Without a Ruler; Is Greater Than ... Is Less Than; Place Value; Seconds to a Minute; Inch, Foot and Yard; Cup, Pint, Quart and Gallon; Penny, Nickel, Dime and Quarter; Ounces and Pounds; What Time?; The Plus and Equal Signs; The Minus Sign; Adding; Addends and Sums; Substracting; Minuends, Subtrahends and Remainders; Multiplication Model; Multipliers, Multiplicands and Products;