They are tools to think with, sufficiently inexpensive to be used for work and play, drawing, writing, and mathematics.
Ha bụ ngwaọrụ eji eche echiche, n'uju ọdịghị oke ọnụ ahịa iji ya arụ ọrụ na egwuregwu, ísè íhé, ídē íhé, nakwa ị́rụ̄ matịmatiks.