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Empson, Susan B., and Levi, Linda. Extending Children's Mathematics: Fractions and Decimals. New Hampshire: Heinemann, 2011.
http://www.illustrativemathematics.org/
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McNamara, Julie, and Shaughnessy, Meghan M. Beyond Pizzas & Pies: 10 Essential Strategies for Supporting Fraction Sense. California: Math Solutions, 2010.
US Department of Education. 2008. Foundations for Success: The Final Report of the National Mathematics Advisory Panel.
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VandeWalle, John A., Karp, Karen S., Lovin, LouAnn H., Bay-Williams, Jennifer M. Teaching Student Centered Mathematics: Developmentally Appropriate Instruction for Grades 3-5, Volume II. New Jersey: Pearson Education, 2014.
Common Core Standards Initiative. 2010. Common Core Standards for Mathematics. Washington, DC: National Governors Association Center for Best Practices and the Council of Chief of State School Officers. Downloaded from:http://www.corestandards.org/.
Empson, Susan B., and Levi, Linda. Extending Children's Mathematics: Fractions and Decimals. New Hampshire: Heinemann, 2011.
http://www.illustrativemathematics.org/
http://illuminations.nctm.org/
http://www.k-5mathteachingresources.com/
McNamara, Julie, and Shaughnessy, Meghan M. Beyond Pizzas & Pies: 10 Essential Strategies for Supporting Fraction Sense. California: Math Solutions, 2010.
US Department of Education. 2008. Foundations for Success: The Final Report of the National Mathematics Advisory Panel.
http://www.thinkingblocks.com/index.html
VandeWalle, John A., Karp, Karen S., Lovin, LouAnn H., Bay-Williams, Jennifer M. Teaching Student Centered Mathematics: Developmentally Appropriate Instruction for Grades 3-5, Volume II. New Jersey: Pearson Education, 2014.