MUS reviewing previous concepts question

We’ve always used MUS(have done up to Algebra). Even thought MUS is mastery-based, you still do review past concepts. Lessons A, B, and C are on the new concept, and Lessons D, E, and F are on the new concept PLUS old conepts thrown in. Overall, my kids haven’t had trouble w/forgetting past concepts.  On the first review page they will sometimes throw in a review sample(showing how to figure it out and the answer) of a past concept as a reminder. That has been helpful and all we’ve needed.

I LOVE MUS in the younger years and am so glad we haven’t gone w/a more cumbersome program. Though I am evaluating the upper levels…..

I have one child halfway through Delta and another one about to start Gamma. I have not found that they forget previously learned skills because there is always some practice in the last three worksheets per lesson on past concepts, like momto2blessings mentioned. So, even though my son’s new concept was finding the area of a trapezoid, he was still having to do word problems and practice problems that required him to divide, add, and subtract, convert quarts to gallons, inches to feet, etc., find perimeter and more. Every once in a while, they might need a little refreshing if it’s a concept they haven’t done in a particularly long time, but I am finding that the older they get, the less refreshing they need.

The one thing that I found disappointing about MUS was that my children did not master their basic function 0-9 facts with MUS alone. For that, we invested in Rapid Recall, and it was a WORTHY investment. Our son has done subtraction and multiplacation, our daughter has done addition and subtraction. Both can recall their facts with speed and accuracy. I’m sure they might have eventually gotten the facts down by using the Online Drills Application on MUS’s website, but RR really worked for us.