High school economics academic achievement has been poor or at best, mediocre in the Frances Baard District and in South Africa at large. This empirical study explores lesson planning, resources and pedagogical content knowledge as the challenges experienced by Frances Baard Economics teachers in their endeavour to implement the Economics curriculum. Curriculum implementation can be defined as how teachers plan and deliver instructions through the use of specified resources provided. Curriculum implementation is reliant on the teacher's ability to plan, choose and use available resources. This study makes use of Mediated Learning Experience (MLE) parameters of intentionality, reciprocity and mediation as a theoretical framework. These parameters act as a guide for how Economics curriculum should be implemented. Anchored in the qualitative phenomenological multiple case study, the study is operationalised by three purposefully selected Economics teachers, with varying levels of qualifications and experiences, from different schools which belong to different quintiles. Document analysis, observations and semi structured interviews were used to gather data after which the data were thematically analysed while member checking was used for validation. Although an effort was made to get a representative sample of schools in the Frances Baard District, the results of this study should be generalised with caution since only three schools formed part of this study. The findings of this exploration reveal that some Economics teachers encounter challenges with lesson planning, content knowledge, availability and use of resources. In mitigation to these challenges, the study recommends that the Department of Education should periodically organise workshops where teachers are empowered in terms of the Economics curriculum content, and use of various teaching strategies. It is also recommended that the Department of Education provide current and relevant resources and collaborate with different economics stakeholders.