In this self-checking Google Sheets digital activity, students will simplify rational expressions involving monomials, binomials, and trinomials from 12 question. As students answer the questions, words will be revealed for the silly phrase! HOW IT WORKS: Students answer the question. A word will be revealed (could be the right word or could be a random word). Once all 12 questions have been answered, the progress bar will show what percent of the questions are correct, the correct answe