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#### Description:

This Sketchpad activity, which opens on Geometer's Sketchpad as well as on iOS with Sketchbook Explorer (cataloged separately), allows students to use a scale to make conjectures about the properties of powers of 2 based on their observations. Students are given a random value between 1 and 63 on one side of a scale and must balance it by selecting variables whose assigned values are powers of 2 (1, 2, 4, 8, 16, and 32). A five-minute movie provides detailed instructions and downloadable PDF of teacher notes and student worksheets are also included.

#### Subjects:

• Mathematics > General
• Education > General

#### Keywords:

Grade 3,Make use of structure,NSDL,Grade 4,Grade 5,Addition,Visual representation,Representation,Number concepts,Social Sciences,Arithmetic,Analyze and persevere,Concept formation,Process skills,Number and operations,Upper Elementary,Algebra,Life Science,Composition and decomposition of numbers,Equations,Reason abstractly,Informal Education,Whole numbers,Middle School,Vocational/Professional Development Education,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,oai:nsdl.org:2200/20140728161032697T,Practice Standards,Grade 6,Elementary School,Reason quantitatively,Algebraic thinking,Chemistry,Operations,Mental calculation,Number sense,Mathematics,Connections,Engineering,Critique reasoning,Education,Construct arguments,Reasoning

English

#### Access Privileges:

Public - Available to anyone

Creative Commons Attribution Non-Commercial Share Alike

#### Collections:

None
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