For Brynne's first and second grade year homeschooling (Eli was still in public school) and for the beginning of their third grade year homeschooling together, we used Math Enhancement Programme (MEP) as our math curriculum. Math Enhancement Programme is a FREE online printable math curriculum that uses the Hungarian model of teaching mathematics. Most of it is mental math ... and high level mental math. In fact, it was astonishing to me the math solutions the kids could do in their heads. Hungary is highly ranked in the world in their math performance, even at the primary ages. The model for mathematics is based more on student interactive and whole class teaching. Although the teacher presents the materials and problems, the students work on the solutions as a whole class and discuss the methods for coming up with the solutions. Much of the work is done mentally. It tends to focus on investigating the whys of mathematics instead of just rote memorization of facts. Ph...