The On-Line Encyclopedia of Integer Sequences (OEIS)
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Mathsframe has more than 200 interactive maths games and 300 maths worksheets and assessments linked to the new curriculum. All resources are designed by an experienced KS2 teacher. New games and worksheets are added regularly.
Java applets for calculating nutation NMR line intensities of half-integer quadrupole spins excited by pulse sequences
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Infoplease is a free, authoritative, and respected reference for Internet users that provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus.
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