In this series of videos (16 clips, 1-10 min each), math coach Becca Sherman works with a fourth grade class in developing concepts of equal groups, multiplication, division, and the relationships among them. She employs multiple models, including the "Singapore Bar Model," and facilitates student discussion, allowing her to assess students understanding of the language and the math involved. Included are teacher commentary, video transcripts, student work samples, and a video of debriefing among colleague observers.


  • 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


Visualization,NSDL,Grade 4,Teaching strategies,Addition,Visual representation,Representation,Misconceptions,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Concept formation,Division,Number and operations,Upper Elementary,Mathematical language,Word problems,Grade 5,Model with mathematics,Subtraction,Multiplication,Composition and decomposition of numbers,oai:nsdl.org:2200/20140728160714189T,Whole numbers,Vocational/Professional Development Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Reason abstractly,Practice Standards,Life Science,Elementary School,Modeling,Reason quantitatively,Chemistry,Operations,Assessment of students,Mental calculation,Communication,Mathematics,Process skills,Connections,Grade 3,Problem solving,Writing in mathematics,Education,Construct arguments



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