The math curriculum in North America typically includes Algebra I in 9th grade, Geometry in 10th, Algebra II/Trigonometry in 11th, and Pre-Calculus in 12th grade. In honors programs, students often start Algebra I in 8th grade and progress to Calculus in 12th grade. For those seeking to learn basic math concepts, focusing on Algebra and Geometry is recommended, with suggested textbooks by Harold Jacobs and others for deeper study. Pre-Algebra is generally taught in middle school as a review of arithmetic and an introduction to variables. Students are encouraged to explore advanced math options if available, which can allow for skipping certain courses.