This problem promotes logical thinking and introduces learners to the trial and error (guess and check) problem solving strategy, especially with the interactive provided. In this problem children need to understand the difference between having a certain number of brothers and the number of boys in a family to answer the question, "How many children are there in the Brown family?" The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and a link to a down loadable worksheet for students to table their trials.


  • Mathematics > General
  • Education > General

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Grade 2,Visualization,Grade 1,NSDL,Grade 3,Critical thinking,Early Elementary,Kindergarten,Visual representation,Strategies,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Concept formation,Process skills,Number and operations,Upper Elementary,Algebra,oai:nsdl.org:2200/20140728161052206T,Life Science,Composition and decomposition of numbers,Logic and foundations,Informal Education,Whole numbers,Problem solving,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Elementary School,Reason quantitatively,Algebraic thinking,Chemistry,Mental calculation,Education,Communication,Mathematical language,Mathematics,General,Connections,Critique reasoning,Counting,Reasoning,Representation



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