We use Maria Miller’s Math Mammoth for mathematics. We bought it online and downloaded it. I print off the work books as and when required.
If you look at the Homeschool Buyers Co-op, the sometimes run group buys for this syllabus and you can get a nice discount. They run great discounts on load of other homeschool stuff too.
Today we are looking at Pascal’s Triangle which is a fascinating mathematical triangular array of binomial coefficient.