This professional development video clip shows students engaged in the Common Core Practice Standard #3—Construct viable arguments for conclusions reached and critique the reasoning of others. In this lesson, learners work in groups to discuss and revise their estimates of how many seeds are in a small pumpkin. Additional resources include a video transcript, teaching tips, and a link to a professional development reflection activity based upon the video.


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  • Education > General

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Grade 2,Visualization,Grade 1,NSDL,Teaching strategies,Early Elementary,Visual representation,Mathematics,Number concepts,Arithmetic,Concept formation,Process skills,Number and operations,Place value,Vocational/Professional Development Education,Whole numbers,Problem solving,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Practice Standards,Elementary School,Number sense,Representation,Estimation,Education,Communication,Connections,Critique reasoning,oai:nsdl.org:2200/20140728161212120T,Counting,Construct arguments,Reasoning



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