Hi.  I am trying to plan out my year of study by completing Algebra II (TX TEKS) and Precalculus (TX TEKS) by the end of this school year.  I want to obtain an accurate number of squares I will need to complete.  At the time of this writing, there are 96 Algebra II squares and 133 Precalculus squares.  In my experience with Khan, often times 2 different courses will have overlapping squares.   (For example, I finished the Trigonometry course, and it seems to share around 35 squares with the Precalculus course). So, how many unique squares are there in Algebra II and Precalculus.  Said a different way, how many learning squares in Algebra II are also the same in Precalculus?