Type:

Other

Description:

This number puzzle helps children develop fluency with pairs of numbers that sum to 10 while applying logic and spatial-visualization skills. Users arrange 9 small triangles within a large one so that the numbers on the matching edges total 10. Students can use the interactive Flash applet or the printable (pdf) triangles provided. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and a link to related games (cataloged separately).

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,Grade 3,Grade 1,NSDL,Addition,Early Elementary,Spatial sense,Visual representation,Reason quantitatively,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Process skills,Number and operations,Upper Elementary,Subtraction,Life Science,Composition and decomposition of numbers,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Reason abstractly,Practice Standards,Elementary School,Strategies,Chemistry,Operations,Mental calculation,Mathematics,Problem solving,Education,Representation,oai:nsdl.org:2200/20140728160643231T

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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Non-profit Tax ID # 203478467