We started from 1st grade with Singapore Math US Edition, and though I've looked at other programs since then, I can't even THINK about switching! I wish I had had this as a child because it makes you see it in a much easier and faster way. Yes, it takes work. But my daughter loves the format of the workbook. Looks fun and differs activities with riddles and puzzles solved with your math answers. I was disappointed that this workbook was all one color instead of multicolored. I recommend the original Singapore Math US Edition teachers edition with it. Though it has more activities than I use, it has some really great teaching ideas/methods to help your child.
We used this workbook before but it was much more challenging than the regular US math books. Too much mental math was included. My son was reluctant to work on it so we quit after 2 months.
Then we switched to US math. I did some research and finally I selected Beestar as our home learning site. It provides many core subject programs such as social studies, language arts with reasonable price. The math program is totally free. We subscribed to it and received its math practice every week. Not giving too many questions, the practice covers almost every math skills without asking students to spend time on repetitive work.
My son likes using it. He says the questions are very interesting. The reward system is attractive as well. Although there're many competitive students from statewide on the site, he has been on the honor roll for three times, which helps him build confidence for math. His teacher suggested him to try Beestar's GT math program next semester.
We began using Singapore math when our children were 5. Our children studied 3A and 3B when they were 7 years old. While that seems young, if one is diligent in working through the previous books, it is very possible to have gained the ability to learn at that rate. Note: Learning math facts through Classical Conversations was a tremendous benefit to our children as they studied Singapore Math. If CC isn't an option, you may wish to teach skip counting songs or something else like Kathy Troxel's multiplication fact songs. While this program has required much effort from both child and parent, we have also received great rewards (e.g., mathematical skills, understanding that we are "in this" together and don't quit, etc...). A healthy determination is required.
As a home schooling mom, I tried tons of Math books for my kids. My kids are excel in the Math of their grade level, and
Primary Mathematics series are the best workbooks for them.
It made them to practice basic calculation skills and also to think for the applied word problems, too. One thing that I didn't satisfy for the whole series is it needs to deal with more on Geometry and graph interpretation.