In this Model-Eliciting Activity (MEA), students will review data and rank minerals from best to worst in terms of mineral properties, to help a mineral jeweler decide on the best mineral to use to make a necklace. Students will consider hardness, luster, color, cleavage and safety by analyzing the given charts which include these data by mineral. Students will work as a group and create a model for ranking the minerals.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. MEAs resemble engineering problems and encourage students to create solutions in the form of mathematical and scientific models. Students work in teams to apply their knowledge of science and mathematics to solve an open-ended problem while considering constraints and tradeoffs. Students integrate their ELA skills into MEAs as they are asked to clearly document their thought processes. MEAs follow a problem-based, student-centered approach to learning, where students are encouraged to grapple with the problem while the teacher acts as a facilitator. To learn more about MEAs visit: https://www.cpalms.org/cpalms/mea.aspx