This product serves to help students identify if a number is either rational or irrational. The focus is on "tricky" numbers - perfect squares vs. square roots; terminating vs. non-terminating decimals; and repeating vs. growing patterns. Included is 2 sheets of notes (1 filled out. the other partially filled out to use as guided notes) as well as a number sorting chart with an answer key. I love to use both pages in my students' interactive notebooks as a great reference.