ISBN-13: 9780805843385 / Angielski / Twarda / 2006 / 150 str.
ISBN-13: 9780805843385 / Angielski / Twarda / 2006 / 150 str.
This book contributes to an ongoing effort to establish a research basis for the introduction of algebraic concepts and notation in elementary school--an area of studies that has come to be known as Early Algebra. It provides a rationale for the introduc