Je K' A So Yoruba (Let's Speak Yoruba) is an introductory course for the study of Yoruba, a principal African language centered in Nigeria. This textbook presents an integrated four skills and functional-notational approach to the study of the language, structuring lessons around real-life functions or situations. It integrates reading, writing, speaking, and listening activities and combines the teaching of grammatical structures with a multi-dimensional curriculum in which cultural information is fully integrated with linguistic information. Through the use of authentic language and materials, the student-centred text engages the reader in communication. It is designed for first year students, but is also an appropriate learning tool for linguists, anthropologists and all Africanists.