This activity uses Cuisenaire Rods to develop conceptual understanding of factors and multiples and to encourage systematic thinking. Users are shown a train of four different rods and asked to find equivalent trains, each made from rods of just one color. An interactive Flash Cuisenaire applet is provided as an alternative to using real rods. The Teachers' Notes page offers suggestions for implementation, discussion questions, and ideas for extension and support.
Keywords:Grade 2,Grade 3,Grade 1,Make use of structure,NSDL,Factors,Addition,Early Elementary,oai:nsdl.org:2200/20140728161103193T,Representation,Number concepts,Arithmetic,Analyze and persevere,Concept formation,Process skills,Number and operations,Visual representation,Mathematical language,Model with mathematics,Multiplication,Composition and decomposition of numbers,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Reason abstractly,Practice Standards,Life Science,Elementary School,Modeling,Reason quantitatively,Chemistry,Operations,Upper Elementary,Communication,Mathematics,Connections,Engineering,Problem solving,Education