*MATH-HORIZONS (4th grade students only) No more hours of boring, endless repetition - your kids will actually thank you for this interactive math curriculum! Each level has two student workbooks, but the teacher handbook is the main component of the program. All instruction is provided through one-on-one teacher instruction, Multiplication up to four digits. Division with 2 digit divisors with remainders. Algebraic, fractions, and geometric equations introduced.