This document discusses code switching in mathematics classrooms in Ile-Ife, Nigeria. It finds that teachers in the studied primary schools used code switching between English and Yoruba as an approach to help pupils acquire literacy and understand mathematical concepts. Code switching allowed pupils to use both of their languages naturally during classroom activities. The study concluded that code switching does not negatively impact learning, but is rather a useful classroom interaction strategy and effective way to convey knowledge to students in multilingual settings.