Turn a simple melting experiment into a true engineering design challenge. In Save the Frozen Heart Mission, students take on the role of engineers as they design, build, and test a protective structure to keep one frozen heart from melting. Instead of racing or comparing multiple objects, students focus on problem-solving, material choice, and design thinking. This hands-on STEM activity is perfect for Valentine’s Day or any time of year when teaching heat, insulation, and the engineering d