Think back to your last birthday, did you have enough time to make a wish before you blew the candles out on your cake? In this Algebra lab activity, students investigate how long you have to sing before the candle burns down. During this cooperative learning activity, students will collect data, create a scatter plot graph, find the line of best fit, write an equation in slope-intercept form, find the domain and range of the the function. Included is a detailed teacher lesson plan and a student activity sheet. Please feel free to email me if you have any questions.