In this problem students apply basic proportional reasoning in the context of a pie recipe. Given a recipe for 80 pies, Peter needs to determine whether the ingredients he has on hand are enough to make 2 pies. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension, and printable lists of ingredients (doc).


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Grade 6,NSDL,Grade 4,Grade 5,Mathematics,Arithmetic,Analyze and persevere,Fractions,Division,Number and operations,Upper Elementary,Mathematical language,Word problems,Volume,Model with mathematics,Ratio and proportion,Informal Education,Concept formation,Use appropriate tools,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Middle School,Elementary School,Reason quantitatively,oai:nsdl.org:2200/20140728161126212T,Decimals,Operations,Communication,Connections,Problem solving,Measurement,Process skills,Education



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