I really like MUS, we have used it from Primer level and we are currently in Gamma. I'm struggling with the double digit multiplication. We are on lesson 24 and I cannot wrap my brain around how this concept is taught. If I sit for a bit and stare at the way they do the problem I can figure it out, but man...it seems complicated.
MUS users....can I just teach double digit multiplication the way I learned it (multiply up, across, carry, add, etc) or should I try and teach the way Mr Demme teaches and presents the lesson?