Toggle Accessibility Tools
This site does not support Internet Explorer. Please use a modern browser such as: Chrome,
Firefox, Safari (included with Mac OS) or Edge (included with Windows).
Alibali, M. W., Stephens, A. C., Brown, A. N., Yvonne, S., & Nathan, M. J. (2014)
Algebra and Algebraic Thinking,
Middle School Education,
Number Concepts and Operations