Hot Dots flash cards: subtraction.

These self-checking flash cards help students practice their subraction skills. Students can verify answers immediately by using the Hot Dots power pen, or use the flash cards without the power pen as traditional flash cards.

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企业作者: Educational Insights (Firm)
格式: 照片 图书
出版: Rancho Dominguez, Calif. : Educational Insights , 1998.
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