A "learning trajectory" refers to the path or journey of acquiring knowledge and skills in a specific subject or area of study. It is the progression of learning from a beginner level to a more advanced or proficient level over time. Full definition
Today's lesson should serve a purpose in a longer learning trajectory toward some larger learning goal. (ascd.org)
Specifically, the report describes strategies for using learning trajectories for assessment, instructional purposes, and the development of the Common... (performanceassessmentresourcebank.org)
How might you use learning trajectories as a grade level or discipline to bring cohesion to what students are learning? (ascd.org)