My kids really wanted to try this curriculum because it looked so fun....I liked that it looked easy for me...built in grading & gradebook, SWEET!....unfortunately, I think it's too easy for them....I had my first grader doing math 3...keep in mind she has only had Singapore K math....she got 100% on the first 3 lessons....easy! But my bigger concern is she was learning how to get the right answer but not learning the big picture math concepts we saw with Singapore.....Singapore's though, I'm not going to lie....I found it frustrating because I have 3 grades & one of mine has learning issues, Singapore was super hard for her...but at this point I felt like a bad Mommy to let me kids do TT....I wanted to like it because I thought it would make my life easy....and it would. But we're in California & this is way below the expectations I had for it. I don't want to keep up with public school (and actually my children have only been in private & now home)...but this would have put them at a huge disadvantage to continue until college....not because of state schools, because I don't even care if my children want higher education or not...but because Singapore will create larger capacity in them as thinkers for the rest of their life. I'm putting all 3 TT on ebay & ordering Singapore....Last year I was learning from it & enjoyed it expanding my capacity to think creatively & out of the box. I want kids who think big & out of the box too...that's what this world needs. TT is like the math I learned as a kid that's just to get the right answer, not to learn to think differently. My kids are a little sad...they will miss their burbing & growling buddies, but I just can't have a clear conscience letting them use this out of date method after I've been exposed to Singapore. It's WAY inferior to what we're used to....bye bye to the easy life mama....hello working hard to equip kids for the rest of their lives!