Ladies,
I'll just pop-in to the thread late here with a couple of clarifications that will help as you ponder the best math option for your family.
For those who love TT, I am so glad that it works well for your family. We fully realize that the same math path will not work for everyone.
I only share what I have shared below so that those reading can more fully understand our reasoning in switching from TT to a different math path.
At HOD, we've decided to continue the Singapore route into middle school/high school through Discovering Mathematics, and we are also leaning toward offering the VideoText route as a second option (for those who have not come from a Singapore math background).
While you can easily use any math route you prefer, and there are many good ones, I'll link a thread that explains a bit more about the DM series.
Link:
viewtopic.php?f=6&t=7945
I'll also share a clarification that VideoText does have a full-text answer key with line-by-line error analysis for every problem in the program included. It is one of the most amazing and teacher time-saving parts of VideoText and is an absolute must as we go into higher level maths! The line-by-line answers are meant to help students find their error, and the student is intended to do this error-analysis on his/her own. It is an easy answer key for me to pick up and use to guide my child as needed.
I am also very thankful for the course notes that are also included as well, and the inclusion of almost daily quizzes make sure the student is ready to progress to each next concept. Here's a link to a fuller math discussion of many various math programs out there. It does include a more detailed description of VideoText on the later pages. Just keep in mind that this is an older thread, but I it may be of help as you ponder. Link:
viewtopic.php?f=6&t=2573
For our part, we used TT 6 and 7 with our older son, and for those particular levels when comparing programs we found that TT lagged behind other math programs for grades 6 and 7 scope and sequence-wise. For kiddos who use TT one grade level ahead in the elementary and middle school years, the scope and sequence in more on track.
As kiddos head into high school, in our comparisons, we found that the scope and sequence for TT Algebra I doesn't go as far as typical Algebra I coursework, leaving some Algebra I concepts to be completed in their Algebra II program. The TT Geometry program is a separate program and is strong on its own, covering everything covered in a typical Geometry program. The TT Algebra II program picks up with finishing typical Algebra I concepts and consequently doesn't go as far as a typical Algebra II programs. Those remaining Algebra II concepts are included instead within the TT Pre-Calculus.
For those kiddos who use TT all the way through high school, they eventually end up going just about as far as a usual Pre-Calc. course. So, the concern in using TT comes for those who switch out of TT after Algebra I or Algebra II, thinking they can move into a different Algebra I or II program (and finding they have not had all concepts that are typically covered within those courses).
Another factor we found in the middle school TT courses was that it gave a grade that wasn't always accurate, giving the kiddos more than one try at a problem and then not weighting the grade to show the child needed more than one try to get the answer. This is not a concern in the high school courses, as no automatic gradebook is kept for the student.
For my part, with TT, I also felt lost in helping my child when he did hit a snag, unless I watched the lesson and then helped him. This left me feeling out of touch with what he was learning in math each day.
This can be a problem in many math programs and is not unique to TT but more linked to me not keeping up daily with watching the TT lessons.
With this in mind, to answer the original poster, you can certainly continue on the math path you're already on if desired (just keeping in mind the thoughts I've shared above). Since your son is using TT a grade ahead, you should be fine scope and sequence-wise. We did find almost half of TT7 to be a review of TT6, so if you do go the TT7 route it would likely be possible for your child to only do Math Essentials Pre-Algebra after TT7, and then head into VT Algebra (which begins with Pre-Algebra in Module A and then moves into regular Algebra in Module B on up). The only reason I had my oldest son do Math Essentials regular program was to do a quick review of all his basics in math before VT, as I've switched programs too many times in math with him and felt I had created holes in his math learning.
I pray you will find the math path that is best for your family. I know how difficult this can be and understand that one-size does not fit all!
Blessings,
Carrie