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View over 2,000 films from the Prelinger Archives! Prelinger Archives was founded in 1983 by Rick Prelinger in New York City. Over the next twenty years, it grew into a collection of over 60,000 "ephemeral" (advertising, educational, industrial, and amateur) films. In 2002, the film collection was acquired by the Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division. Prelinger Archives remains in existence, holding approximately 4,000 titles on videotape and a smaller collection of film materials acquired subsequent to the Library of Congress transaction. Its goal remains to collect, preserve, and facilitate access to films of historic significance that haven't been collected elsewhere. Included are films produced by and for many hundreds of important US corporations, nonprofit organizations, trade associations, community and interest groups, and educational institutions.

interactive activities for practicing/learning addition, decimals, division, fractions, mental maths, multiplication, number patterns, percentages, problem solving, subtractions, the number system, using a calculator

"The site is called Spinners and it is a random number generator with the added facility of being able to select addition, subtraction, multiplication or division operations."

Choose the number of friends, and the kinds of cookies to share. Downloadable files for local installation, or play online.