Other

#### Description:

This Sketchpad activity, which opens on Geometer's Sketchpad as well as on iOS with Sketchbook Explorer (cataloged separately), is the first of three balance activities in which students develop intuitive strategies for writing and solving simple algebraic equations. Students drag a shape whose numerical value is known onto one side of a scale and then drag copies of a shape with an unknown numerical value to the other side of the scale until both sides are level. Students then solve the equation to determine the value of the unknown shape. 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:

Make use of structure,NSDL,Grade 4,Grade 5,Addition,Visual representation,Representation,Number concepts,Arithmetic,Analyze and persevere,Concept formation,Division,Number and operations,Upper Elementary,Algebra,Multiplication,Composition and decomposition of numbers,Equations,Informal Education,Vocational/Professional Development Education,Whole numbers,Middle School,Problem solving,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-027,Comparison of numbers,Reason abstractly,Practice Standards,Grade 6,Life Science,Elementary School,Reason quantitatively,Algebraic thinking,Chemistry,Operations,oai:nsdl.org:2200/20140728160543531T,Number sense,Mathematics,Connections,Engineering,Critique reasoning,Process skills,Education,Construct arguments,Reasoning

English

#### Access Privileges:

Public - Available to anyone

Creative Commons Attribution Non-Commercial Share Alike

#### Collections:

None
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