The case study also revealed how complex teaching via an integrated approach can be, especially as teachers move in and out of such an approach or are required to utilise a less-sophisticated form of integration for various reasons. For instance, Adam interrupted his integrated unit on time to revisit skills in subtraction. He also adopted a surface level approach to integration at times so as to practice basic facts. Adam was aware that he had compromised his belief in the importance of integration and was not comfortable with such decisions. However, he could not think of an alternative strategy that would achieve the same outcomes and maintain the integrity of both subjects. Importantly, Adam was aware of his decisions to shift his teaching approach when the situation warranted it. It is possible that many teachers may see this need to shift approaches as a barrier to utilising an integrated approach in the first place.