This module is an introduction to traditional mathematics in Africa. A lesson plan is presented which explores the significance of words in the African number systems and compares them to American mathematical systems. Number words in four African languages are given as examples to illustrate base 5, 10, and 20 systems. Some words have been borrowed from Arabic when the particular base system does not include the desired numbers. Questions in the lesson plan challenge students to suggest social and economic opportunities which the early African number systems provided, possiblities of trade or relations with other groups in cases where their number words have the same derivation, and instances in both American and African mathematics where number words derive from physical terms, such as "foot." Among enrichment activities is a suggestion that students play "Count 'n Capture," a game of supposed African origin which involves mathematical and logical concepts. A bibliography lists eight sources for reading about mathematics and African history. (AV)