Merttens Ruth, Kirkby David:
New Abacus 4: Number Textbook 1 (Textbook 1)
Pearson Education, Oxford (United Kingdom), 2000
Paperback
ISBN: 9780602290795
ISBN-10: 0602290791
New Abacus 4: Number Textbook 1
These textbooks allow independent practice of mathematical skills. They present the concepts at an appropriate reading level. Activities with an investigative or process-skill focus encourage creative and mathematical thinking. Problem-solving is included.
