Horizons Math, published by AOP is an excellent choice for elementary math.

This advanced level curriculum uses a spiral learning method allowing students to master concepts through a process of introduction, review, and reinforcement. Using a traditional format, lessons are taught using the teacher’s guide. Each level includes the Teachers guide and two brightly illustrated student workbooks.

Students master introductory math concepts and gradually progress to more challenging subjects such as decimals, graphs, measurements, angles, ratios, and equations. Lessons are fast paced, colorful and engaging.

Selected as one of the top 100 math curriculums in Cathy Duffy’s 100 Top Picks for Homeschool Curriculum, Horizons Math is a great alternative to the Saxon K-3 curriculum. Available in K-6.