This guide was designed to help teachers use a rekenrek to teach students how to visually recognize a number as two sets of combined objects, how to compare two sets of objects using the matching strategy, and how to construct and deconstruct the same number in different ways. The guide shares a weblink to a free digital manipulative, instructions for using the manipulative, suggested uses, and four example activities.
Common Core Standards Addressed:
CCSS.Math.Content.K.OA.A.3 Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
CCSS.Math.Content.K.CC.C.6 Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group, e.g., by using matching and counting strategies.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License