The aim of this study is to analyze the weaknesses among second-grade primary school pupils in learning Geometry. According to the Mathematics Standard-Based Curriculum for Primary School, the Geometry topic comprises three content standards which are three-dimensional shapes, two-dimensional shapes and problem-solving. Previous studies have found that pupils have difficulties in learning geometry and lack basic skills in mathematics. Therefore, a questionnaire was developed and administered to 220 primary schools in Kerian District. The data were supported by interviews with three primary mathematics teachers. The questionnaire data were analyzed using the Statistical Package for Social Sciences and the results of the interviews were analyzed using ATLAS.ti. The findings showed that second-grade pupils in primary schools have weaknesses, particularly when it comes to grasping the concept of three-dimensional shapes. This study is expected to assist teachers in developing and providing pupils with relevant teaching and learning resources to enhance their understanding of geometry