How to Learn Stipulative Definitions in Mathematics

Math is not learned like a language. Children can learn vocabulary and more complex syntax of common language by mere exposure. They can’t learn math that way. http://www.danielwillingham.com/daniel-willingham-science-and-education-blog/what-the-ny-times-doesnt-know-about-math-instruction. The primary reason for this difference is the nature of definitions of the words in the two languages. Definitions in common language are lexical (they report common