Roth, D. Understanding by Design: A framework for effecting curricular development and assessment. CBE Life Sci Educ. 2017; 6:2, 95-97. 

This is a popular design model in K-12 instructional setting dividing instructional planning into three phases.The main idea is to  essentially place the “horse” of alignment of outcomes and assessment back in front of the “cart” of instructional design. It helps align some of the major misconceptions of how understanding differs from knowledge and how we know when students have attained that mastery or competency of the desired goal.