Abstract: The enrollment expansion of higher vocational colleges has brought great opportunities and challenges to the teaching of big data. The OBE + hierarchical classification teaching mode and guided by the employment in the direction of big data in higher vocational colleges, it carries out hierarchical classification from two dimensions of students and course content. Divide students into multiple categories, divide course content into generic and specialized modules. Through diversified teaching organization forms combined with diversified teaching evaluation, the teaching direction of big data is optimized. This paper expounds the practical landing of the teaching mode based on the situation of OBE + hierarchical classification in the big data course of software technology major in Guangdong Mechanical & Electrical Polytechnic.

Key words: Higher vocational enrollment expansion, Hierarchical classification, OBE, Cognitive level, Big data orientation course, Modularization