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Tool: Concentration
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Description: By yourself or against a friend, match whole numbers, shapes, fractions, or multiplication facts to equivalent representations. Practice with the clear panes or step up the challenge with the windows closed. How many socks can you win?
Technology Type: Computer 
Author: NCTM: Illuminations
Language: English 
Cost: Does not require payment for use

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Courses: Pre-Kindergarten Number sense
Kindergarten Number sense
Math 1 Number sense
Math 2 Counting, Patterns

Teacher Review (Not based on classroom experience)
Reviewer: Sherri26, Jun 11 2008 11:18:58:220PM
Appropriate for: introduction to a concept, practice of skills and understandings
Ability to meet my goals: Very Effective
Recommended for: Pre-Kindergarten: Number sense
Kindergarten: Number sense, Geometry in the plane
Math 1: Number sense, Fractions, Geometry in the plane
Math 2: Number sense, Fractions
Math 3: Operations with numbers, Number sense, Fractions, Percentages
Math 4: Fractions, Percentages
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