Free CCSS Number Rack Activities

Rick Ludeman

The Number Rack, or Rekenrek, was designed to support the natural mathematical development of children and specifically to help them generate a variety of addition and subtraction strategies.

Our free activity book, Using the Rekenrek as a Visual Model for Strategic Reasoning in Mathematics, now includes correlations to the Common Core State Standards for all 10 activities.   

View more Number Rack resources including our free app. 

Rick Ludeman is president of MLC.