...
- ensure timely practice assignments are done at least 3 times per week,
- ensure the learner gets help or feedback when they need it,
- ensure pre assess is done before teaching a topic,
- ensure only one layer is taught from each topic at a time,
- ensure the pre requisites to the layer are mastered.
In other words use timely practice as it was designed to be used.
The solution to cascade failure:-
- select enough layers to be best learned later so that few layers require feedback - this is called thinning out