Irrational numbers are numbers that cannot be expressed as a fraction or ratio, and they have an infinite number of decimal places. They include famous examples like the square root of 2 or the number pi. Full definition
These three activities will help students develop a sense of irrational numbers without giving a formal definition. (sadlier.com)
This module focuses on how a teacher and her students resolve a misconception about irrational numbers as possible lengths of line segments. (smarterbalancedlibrary.org)
For example, there are more irrational numbers than rational numbers. (religion.blogs.cnn.com)