This iOS app displays math expressions and solutions on the edges of 25 squares. The user must organize the squares so that each expression matches with its solution. The user may choose between addition, subtraction, addition & subtraction, multiplication, division, or multiplication & division. There are increasing levels of difficulties within each topic.
Keywords:Grade 2,Grade 3,Grade 1,Make use of structure,NSDL,Grade 4,Grade 5,Addition,Early Elementary,Number concepts,Mathematics,Social Sciences,Arithmetic,Division,Number and operations,Upper Elementary,oai:nsdl.org:2200/20140728160525145T,Subtraction,Life Science,Composition and decomposition of numbers,mobile app,Informal Education,Whole numbers,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Practice Standards,Multiplication,Elementary School,Chemistry,Operations,Mental calculation,Engineering,Process skills,Education,Reasoning