https://www.abebooks.com/9781583246771/Working-Rekenrek-Don-Balka-Ruth-1583246770/plp
Working with the Rekenrek - Don S. Balka; Ruth Harbin Miles: 9781583246771 - AbeBooks
The Rekenrek has emerged as an ideal tool to provide students with a strong understanding of early number concepts. Using the Rekenrek, the 48 engaging...
working with