This problem challenges and extends students' spatial awareness with 2D shapes. The students are given three different irregular shapes. The goal is to divide each of them into two parts that are exactly the same shape and size. The Teachers' Notes page offers rationale, suggestions for implementation with a link to Happy Halving (cataloged seperately), discussion questions, and ideas for extension and support.
Keywords:Grade 2,Visualization,Make use of structure,NSDL,Grade 4,Grade 3,Critical thinking,Early Elementary,Spatial sense,Visual representation,Representation,Mathematics,Arithmetic,Analyze and persevere,Fractions,Process skills,Number and operations,Upper Elementary,Mathematical language,oai:nsdl.org:2200/20140728161007329T,Transformations,Informal Education,Concept formation,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Geometry,Reason abstractly,Practice Standards,congruent,Elementary School,Strategies,Communication,Congruence,Plane geometry,Engineering,Problem solving,Education,Reasoning