Teachers can use Rekenrek to help their students to :

develop one-to-one correspondence;

subitize;

develop a solid undersatnding of fives and tens;

recognize the sturcture of our base-ten system;

"decompose" numbers based on familiar number groups;

see "inside" numbers, recognizing for example that 7 is "5 and 2 more";

develop powerful intuitive strategies for addition and subtraction;

become adept at using strategies like doubling, halving, adding on, etc.

There is a growing body of research suggesting the importance of the number line as a tool for helping children develop greater flexibility in mental arithmetic as they actively construct mathematical meaning, develop number sense, come to understand number relationships, and develop powerful strategies for addition and subtraction.

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Number talks are tool for students to acquire number sense. Number talks inhance student's mathematical fluency so they can learn to reason with numbers and make mathematically convincing arguments.