Zaner-Bloser, the nation's largest supplier of handwriting manuals, offers coursework through the eighth grade but admits that these days, schools rarely purchase materials beyond the third grade.
全国最大的写字教材提供者Zaner - Bloser提供从一年级到八年级的教材练习，不过，他们也承认现在很少有学校买三年级以上的写字教材了。
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