Thank you for these great insights. I have a question about grade 3 NF with regard to mixed numbers. Mixed fractions are not mentioned in the grade 3 NF domain. I see 4/1 and 4/4 but not 41/2. However, when we get to MD, we find mixed numbers in the line plots. We are aligning our grade 3 (other grades too) curricular resources to the CCSS. We skipped chapters in our book on mixed numbers. Then when we got to line plots with fractional locations, we were confused. Could someone please provide guidance on this? Thank you in advance.