ISBN-13: 9780982136317 / Angielski / Miękka / 2009 / 184 str.
ISBN-13: 9780982136317 / Angielski / Miękka / 2009 / 184 str.
First in the Arbor Algebra series. A writing-based, common sense, whimsical & engaging introduction to algebra for middle-grade math students.