The teaching guide outlines developmentally sequenced activities for learning the basic computational skills. Sections cover sequential steps for the addition, subtraction, multiplication, and division of whole numbers; information on developing building kits and sample worksheets; the use of number sheets (sample sheets are provided); and the use of teaching machines for math. The bulk of the document focuses on individual and group activities for learning number facts. Each activity or game is described in terms of materials needed, construction of materials (where applicable), and activity directions. Also included is a list of commercial materials. (SBH)