Horizons Pre-Algebra Pre-algebra is where math shifts from working the problem to understanding how the problem works. Horizons Pre-Algebra is a print-based math curriculum that provides your seventh- or eighth-grader with a structured way through that transition. The full course runs 160 lessons in a single student workbook, covering signed numbers, exponents and roots, prime factorization, ratios and proportions, percents (including discount, commission, and simple and compound interest), probability and statistics (box-and-whisker plots, stem-and-leaf plots, histograms), linear equations and inequalities, slope and graphing, polynomials and the FOIL method, the Pythagorean theorem, geometry (volume, surface area, properties of solids), and trigonometric ratios. Horizons uses a spiral curriculum design, which means concepts are introduced briefly, then revisited again and again across the year with a little more depth each time. This contrasts with mastery-based programs, which work through one concept thoroughly before moving to the next. Spiral curricula are usually a better fit for kids who get bored doing the same kind of problem repeatedly, and for parents who'd rather their student see a concept multiple times across the year than spend a whole unit on it once. The Tests and Resources book adds 80 worksheets, 16 tests, 4 quarterly exams, formula strips, nets supplements, and algebra tiles for hands-on work. The teacher's guide walks you through each day's lesson with daily lesson plans, teaching tips, material lists, and complete answer keys for the student workbook, worksheets, tests, and exams. Horizons Pre-Algebra includes occasional Christian references in its lessons, as do other levels beginning in grade 4. The K-3 levels of the series are nonreligious. Horizons Pre-Algebra is a good fit for a seventh- or eighth-grader who's ready for pre-algebra and parents who want a fully scripted lesson plan rather than building their own.
