When working with my fab team of teachers on our 'Curriculum and Assessment Rebuild', I have sought to always share a glimpse of the evidence base, but for time-pressed teachers!
Find here the one-page handout on The Importance of Deliberate Practice with extracts from @teacherhead, @daisychristo, @NSMWells that summarise why breaking down complex/generic tasks into component/granular/deliberate practice or drills is useful.
The books they're drawn from: The Learning Rainforest, Making Good Practice and Nick's Blog are all truly excellent and must-reads for any Leader of Curriculum embarking on a re-think/review/refine of their curriculum or assessment.