In this Science NetLinks lesson plan, students learn to see numerical relationships and how to solve complex problems by manipulating objects (beans) and solving equations. Working with a partner, students pack 8 bean bags (sandwich bags) by reading each rule and figuring out how many beans of each kind (red, lima and black) go in each bag; learners record answers in a table. For some bags there is only one possible solution, while for others there are several correct answers. Students can develop confidence in their answers even when they differ from those of their classmates.
Keywords:Algebraic representation,NSDL,Grade 4,Visualization,Addition,Visual representation,Representation,Number concepts,Arithmetic,Analyze and persevere,Fractions,Division,Number and operations,Upper Elementary,Algebra,Word problems,Grade 5,Ratio and proportion,Subtraction,Multiplication,Composition and decomposition of numbers,Equations,Concept formation,Whole numbers,Vocational/Professional Development Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Reading in mathematics,Life Science,Elementary School,Reason quantitatively,Algebraic thinking,Chemistry,Operations,Education,Communication,Mathematical language,Mathematics,oai:nsdl.org:2200/20140728161224624T,Grade 3,Problem solving,Process skills,Counting,Reasoning