To solve real-world issues, the model of transdisciplinary research, which uses approaches from both the hard and social sciences, has recently come to the forefront. It allows researchers to look at a problem from many angles, with the goal of making both societal and scientific advances. This primer provides scholars with a model for this type of work, while offering a description of methods for knowledge integration that can be applied to any field, making it an indispensable guide for every transdisciplinary researcher and teacher.