Download or read book Abacus Evolve. [Year] 4, Answer Book written by Ruth Merttens and published by Ginn. This book was released on 2007-05-04 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teachers who use Abacus Evolve have praised its flexible assessment, planning support, creative teaching and sound mathematical progression. They tell us that this has helped them raise standards, reduce workload and increase confidence in maths.