This professional development video (video 2) from Minnesota Math and Science Teacher Academy Center in Region 11 presents an algebra training session on justification. Viewers watch Dr. Terry Wyberg discuss opportunities to focus on what constitutes an appropriate level of justification for students through a discussion of the conjecture: An odd number plus an odd number is always an even number. Dr. Wyberg presents the need for teachers to extend their students' levels of justification from appeal to authority ("My teacher told me!") to using an illustrative example where words, symbols or diagrams explain their thinking; the teacher helps student pull out a generalized argument or proof. The math education textbook: “Thinking Mathematically: Integrating Arithmetic and Algebra in the Elementary School" is referenced in this video.


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Grade 3,Teacher content knowledge,NSDL,Grade 4,Teaching strategies,Addition,oai:nsdl.org:2200/20140728161054988T,Mathematics,Number concepts,Arithmetic,Concept formation,Process skills,Number and operations,Upper Elementary,Algebra,Grade 5,Whole numbers,Vocational/Professional Development Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Practice Standards,Elementary School,Representation,Algebraic thinking,Algebraic proof,Operations,Parity,Communication,Mathematical language,Critique reasoning,Education,Construct arguments,Reasoning



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