SAMMO
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http://www.math.msu.edu/~nathsinc/java/sammo.html  


Sinclair, Nathalie; Murphy, Pat; et al.  
Tools for exploring, creating, and doing mathematics. Sinclair's Java applets let middle school students explore appealing mathematical situations not normally included in school curricula while using fractions, ratios, decimal numbers, and other concepts and tools that they are required to learn in school. Investigate color combinations; the locker problem; decimal expansions of fractions ("Decimal Designs"); the law of large numbers ("Raindrops"); properties of numbers, including patterns of even, odd, square numbers, prime numbers, multiples, and factors ("The Number Worlds"); and balancing a teetertotter ("The Balancing Act").  


Levels:  Late Elem. (35), Middle School (68), High School (912) 
Languages:  English 
Resource Types:  Problems/Puzzles, Fun for Kids, Web Interactive/Java 
Math Topics:  Equations, Fractions/Decimals/Percents, Number Sense/About Numbers, Patterns/Relationships, Probability, Mechanics of Solids 
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