Using a homemade calculator to master the basic facts

By: Nelson, Marvin NContributor(s): Clark, H. CliffordMaterial type: TextTextDescription: 211-213Subject(s): ADICION | DESTREZAS MATEMATICAS | ENSE\197ANZA MATEMATICA | MATERIALES EDUCATIVOS | MATERIALES MANIPULABLES | MEMORIZACION
Contents:
Abril 1993
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Abril 1993

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