Based on Ray's New Intellectual Arithmetic this series is recommended for Grade 3.  Topics include: addition symbols; addition table; addition problems; subtraction symbols, table, and problems; multiplication symbols, table, and problems; division symbols, table, and problems; fractions (halves, thirds, fourths, etc.); writing and reading fractions; proper and improper fractions; mixed numbers; finding a fractional part; story problems; lowest terms; higher terms; common denominator; and least common denominator.

Uses Ray's Intellectual Arithmetic. The Key to the Primary, Intellectual, and Practical is also recommended. The Parent-Teacher Guide is optional.