Mrs. Martin’s Grade 5 class is engaged in a science unit on matter. In the previous lesson, they conducted an experiment to study how physical and chemical changes affect the mass of various substances. Today, students are going to analyze the data they collected and draw conclusions based on their observations. The class was recently introduced to the coordinate system, which gives students the ability to graph their data and analyze it with this type of representation. Mrs. Martin sees this as a good opportunity to reinforce their mathematics learning and practice plotting data points.