Blue Corn Mush: What makes corn mush turn blue? An Indigenous STEM Lesson Plan Grades: 3rd Grade Leave this field blank 1 votes with an average rating of 1. Students will explore the reason why blue corn mush turns blue when juniper ash is added. Students will create a hypothesis and engage in active discussions about the why of this process. Students Read more about Blue Corn Mush: What makes corn mush turn blue? An Indigenous STEM Lesson Plan Recipe Food Arizona Measuring