Engage your students this winter as they practice writing equations of trend lines and making scatterplot predications with this self-checking digital "Four of a Kind" game (which uses Google Sheets). In this activity, students are give four scatterplots with a trend line shown. Students will write the equation of each line using the two points given. Then, students will answer two questions about each graph, either making a prediction from the trend line or answering a question which requires