This week, I used a couple of National Council of Teachers of Mathematics resources for my Pre-Algebra classes.  Additionally, in 6th grade math, I found a wider divide between kids who totally get what we're doing and kids who are fairly lost.  We're also ramping into building actual robots in robotics! PRE-ALGEBRA DISTRIBUTIVE PROPERTY My goal this week was to teach the distributive property and simplifying expressions in Pre-Algebra.  Last year, my 'lesson' on the distributive property was 1 slide in a presentation about simplifying expressions.  Needless to say, they never had a really deep understanding of it.  This year,…