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Published November 2012 Filed in Curriculum and Instructioncategory

Hands On Numberlines that Develop “In the Head” Number Sense

Developing number sense, by moving students from basic counting to place value and operations, develops gradually through exploration with numbers as well as models that represent those numbers in a concrete way.   Manipulatives and representations of number lines can assist students as they develop the ability to picture them abstractly in their heads.

 

Research
Number  sense  commonly  begins  with  the  initial  development  of basic counting techniques and moves to more sophisticated understandings of numbers such as size, number relationships, patterns, operations, and place value.  Students who develop number knowledge are able to solve problems and comprehend place value by creating a visual number line in their head. Students with math difficulties score lower on these kinds of tasks and require instruction to develop these skills (Bryant, et al., 2008)
 
Application
Mastery  and  fluency  with  whole  numbers  is  a  critical  foundation for  later  success  in mathematics,  especially algebraic thinking and Algebra.  Developing number sense, by moving students from basic counting to place value and operations, develops gradually through exploration with numbers as well as models that represent those numbers in a concrete way.   Manipulatives and representations of number lines can assist students as they develop the ability to picture them abstractly in their heads.  Beaded number lines can be a useful tool as students learn to count, calculate, and round both whole numbers and integers.  As students progress, an open number line can be introduced leading them toward representive and eventually abstract understanding.
 
Resources

Building a Beaded Number Line

Instructional strategies for creating and using beaded number lines to develop number sense for students who are working on skills in counting, counting backwards, and rounding. Video   Using a Beaded Number Line (grades K-2)

Beaded Number Line Interactive
 
Interactive beaded number line: http://www.taw.org.uk/lic/itp/itps/counting_on_and_back_1_1.swf Instructions http://www.taw.org.uk/lic/itp/count_on.html
 
Class Sized Version of the Beaded Number Line
An idea suggested by Johanna Ortiz, VBPS: Create a class-sized version of a beaded number line using swimming pool noodle segments and nylon rope. http://totallytots.blogspot.com/2011/07/simply-made-pool-noodle-bead- games.html

A Progression of Number Line Models

A visual model that illustrates a progression of number line models leading to an open number line model. http://www.pearsonschoolsandfecolleges.co.uk/Primary/Scotland/Mathematicsf orScotland/GoMaths/Resources/Planningmaterial/GoMathschart.pdf
 
Reference
Bryant, D., Bryant, B., Gersten, R., Scammacca, N., Funk, C., Winter, A., Shih, M., & Pool, C. ( 2008). The effects of tier 2 intervention on the mathematics performance of first grade students who are at risk for mathematics difficulties. Learning Disability Quarterly, 31, 47-63.

Tags: algebraic thinking, Instructional Strategies, Interactive, Manipulatives, number line, Number sense

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