Mathematics is perceived by many to be neutral, objective and free from bias. However, mathematics is performed by human beings who have formed certain biases throughout their development. Applying math to solve real-world problems inherently involves bias and yields positive and negative outcomes for different members of society. It is therefore crucial to take an ethical lens as we use mathematics. We seek to develop students’ capacity for mathematical and ethical reasoning, so that students can eventually use mathematics responsibly in their own lives as well as for the lives of others. But how can we do this when the year is already packed with standards that must be addressed? Instead of recommending add-ons, we explore how to develop instructional materials that introduce and develop mathematical concepts within ethically-complex contexts.