Through Experiment 3, we introduced how we acquire metals (for example, iron) through food intake and metabolize them for use in biological processes. Students learnt about the presence of iron in cereal and how this element can be separated using a strong magnet after dissolving the cereal into a solution. After a brief discussion, students were able to acknowledge that we also intake other metals like calcium, potassium, and magnesium through diet and that metals are essential for life-sustaining metabolism. In Experiment 4, students enjoyed color changes observed during the heme extraction of myoglobin protein. The discussion that followed further engaged them with how metals are responsible for different colors of blood in different species. For example, humans bleed red due to the presence of heme-iron in their oxygen-transporting protein hemoglobin, while some arthropods and mollusks bleed intense blue due to copper-based hemocyanin in their blood. We think that incorporating hands-on experiments/demonstrations discussed herein will equip high school/undergraduate students with a better connection between metals and biology/biocatalysis. From a broader perspective, we also hope to increase the level of knowledge acquisition with an experimental approach to metals in biology while boosting the students', especially women's, interest in pursuing careers in the STEM field.