Type:

Other

Description:

In this Focus on Math blog entry, Carollee Norris describes how she uses a 100-dot array to develop number sense and mental math skills. As she covers some rows (and later rows and parts of rows) on a projected grid, students learn to identify quickly the number of rows and dots that are visible, as well as how many are hidden (to complete 100). Through practice, children are able to visualize the structure of the array and apply it to mental math and problem solving tasks.

Subjects:

  • Mathematics > General
  • Education > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

Grade 2,Visualization,Grade 1,Make use of structure,NSDL,Teaching strategies,Early Elementary,Visual representation,Representation,Number concepts,Social Sciences,Arithmetic,Concept formation,Process skills,Number and operations,Upper Elementary,Life Science,Composition and decomposition of numbers,Patterns and sequences,Whole numbers,Use appropriate tools,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Instructional materials,Practice Standards,oai:nsdl.org:2200/20140728160944225T,Elementary School,Number patterns,Reason quantitatively,Chemistry,Mental calculation,Number sense,Mathematics,Connections,Engineering,Grade 3,Vocational/Professional Development Education,Education

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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