Usage History of 'classworks'

The following chart shows how frequently 'classworks' appeared in printed materials over time. For example, the word 'classworks' occurred 2 times in books in 1968 and 20 times in 2008. From 1968 to 2008, the word 'classworks' was used a total of 1,640 times in books scanned by Google. See Reference: Google Ngram project.

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