All you need to teach about rational and irrational numbers! This unit is perfect for the NYS Algebra 1 Common Core curriculum.In the first lesson, students explore the different subsets of rational numbers- natural (counting) numbers, whole numbers and integers- and the technical definition of a rational number. Students write natural (counting) numbers, whole numbers, integers, proper fractions, improper fractions, mixed numbers, terminating decimals and repeating decimals as a "ratio of two i