The National Senior Certificate Diagnostic Reports for the 2014 and 2015 National Senior Certificate Examinations for the subject Physical Sciences reported that many candidates lacked understanding of basic concepts in the subject. Most basic concepts are introduced and taught to learners as early as grade 10. Grade 10 provides learners with the foundation required to build a more intricate, and critical understanding of science. Critically, teachers have to drive this process. The nature of the experiences of the teachers would therefore be of primary influence during classroom practices to assist these learners. Teachers have to provide meaningful learning. Teacher experiences are derived from professional development, beliefs and subject content knowledge. This was a qualitative study which made use of a case study design. It involved three cases from one of the districts of the Kwa-Zulu Natal Department of Education, South Africa. Data was collected using multimethod strategies and analysed using the typology approach. This study was guided by the following main research questions: What are the nature of the experiences of teachers in implementing the Physical Science curriculum in a grade 10 class? The study sought to answer the following sub-questions, how does teacher knowledge influence classroom practice in the implementation of grade 10 Physical Sciences curriculum? What is the nature of the professional development received by the grade Physical Sciences teacher? and What are the teacher’s beliefs with regard teaching and learning of Physical Sciences in a grade 10 class? The findings of the study revealed that the status quo of traditional teaching of Physical Sciences still exists in the grade 10 classroom practices of teachers. Teacher generally displayed some good subject matter knowledge. A lack of professional development for grade 10 Physical Sciences teachers’ negatively impacted on classroom practices of the teacher. Teacher beliefs had major influence on classroom practices of the teacher. This study recommends teachers have to undergo meaningful, ongoing professional development to assist them improve their classroom practice skills. A Model of Intensive Professional Development is recommended for teachers in the South African Classroom. / Curriculum and Instructional Studies / D. Ed. (Curriculum Studies)