This five-minute video answers the question "Must one always invert and multiply?" when dividing fractions. An alternative algorithm is presented which works well in certain cases. The video focuses on sense making in using either method, and on judging the reasonableness of answers.
Keywords:Grade 6,NSDL,Grade 5,Reason quantitatively,Mathematics,Equivalent fractions,Arithmetic,Analyze and persevere,Fractions,Division,Number and operations,Upper Elementary,Algebraic representation,Social Sciences,Multiplication,Informal Education,Concept formation,Middle School,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,oai:nsdl.org:2200/20140728161247881T,Elementary School,Algorithms,Representation,Computing and Information,Mental calculation,Communication,Mathematical language,Connections,Process skills,Education